Questions
A recent 10-year study conducted by a research team at the Great Falls Medical School was...

A recent 10-year study conducted by a research team at the Great Falls Medical School was conducted to assess how age, systolic blood pressure, and smoking relate to the risk of strokes. Assume that the following data are from a portion of this study. Risk is interpreted as the probability (times 100) that the patient will have a stroke over the next 10-year period. For the smoking variable, define a dummy variable with 1 indicating a smoker and 0 indicating a nonsmoker.


Risk

Age
Systolic
Blood
Pressure

Smoker
10 56 145 No
25 55 160 No
10 60 156 No
58 88 175 Yes
27 60 195 Yes
49 75 185 Yes
15 55 156 Yes
32 77 120 No
35 80 135 No
15 78 98 No
22 71 152 No
36 70 173 Yes
15 67 135 No
48 77 209 No
14 60 199 No
36 82 119 Yes
8 65 166 No
34 82 125 No
3 61 117 No
39 60 208 Yes
(c) What is the probability of a stroke over the next 10 years for Art Speen, a 67-year-old smoker who has a systolic blood pressure of 165?
If required, round your answer to two decimal places. Do not round intermediate calculations.

In: Statistics and Probability

Xander, summer statistics intern in the Superintendent’s Office for the Palisades Point School District, wonders if...

Xander, summer statistics intern in the Superintendent’s Office for the Palisades Point School District, wonders if the homerun teacher referrals in the 7th grade for two week periods are comparable. He tests this claim very preliminarily at the 1% significance level as a pilot study, and presumes that the distribution of referrals among these teachers is reasonably normal. He collects independent, simple random samples. The following data tables represent the numbers of referrals made by these seventh grade teachers:

Alcott

10

15

23

20

18

16

20

20

16

18

Buck

12

13

24

16

12

10

19

16

18

Dickinson

20

24

22

21

20

24

18

Lee

22

25

20

21

25

13

27

25

Oates

25

18

26

23

32

16

20

23

24

Walker

16

18

20

12

16

18

20

12

14

17

What hypotheses should he test? Were the results statistically significant? What conclusion should he draw, qualifying the result as extreme or marginal if appropriate? Explain his anticipated findings in detail, both technically and contextually. Be sure to identify the necessary critical and p-values as part of the analysis.

In: Statistics and Probability

Skolt Products, Inc., is a merchandising company that sells binders, paper, and other school supplies. The...

Skolt Products, Inc., is a merchandising company that sells binders, paper, and other school supplies. The company is planning its cash needs for the third quarter. In the past, Skolt Products has had to borrow money during the third quarter to support peak sales of back-to-school materials, which occur during August. The following information has been assembled to assist in preparing a cash budget for the quarter:

  

a. Budgeted monthly absorption costing income statements for July–October are as follows:
  July    August September October
  Sales $ 42,000    $ 72,000    $ 52,000     $ 47,000   
  Cost of goods sold 25,200    43,200    31,200     28,200   
  Gross margin 16,800    28,800    20,800     18,800   
  Selling and administrative expenses:
       Selling expense 7,400    11,900    8,700     7,500   
       Administrative expense* 5,800    7,400    6,300     6,100   
  Total selling and administrative expenses 13,200    19,300    15,000     13,600   
  Net operating income $ 3,600    $ 9,500    $ 5,800     $ 5,200   
*Includes $2,000 depreciation each month.

   

b. Sales are 20% for cash and 80% on credit.
c.

Credit sales are collected over a three-month period with 10% collected in the month of sale, 65% in the month following sale, and 25% in the second month following sale. May sales totaled $32,000, and June sales totaled $38,000.

d.

Inventory purchases are paid for within 15 days. Therefore, 50% of a month’s inventory purchases are paid for in the month of purchase. The remaining 50% is paid in the following month. Accounts payable for inventory purchases at June 30 total $12,300.

e.

The company maintains its ending inventory levels at 75% of the cost of the merchandise to be sold in the following month. The merchandise inventory at June 30 is $18,900.

f. Land costing $4,700 will be purchased in July.
g. Dividends of $1,200 will be declared and paid in September.
h.

The cash balance on June 30 is $7,000; the company must maintain a cash balance of at least this amount at the end of each month.

  i.

The company has an agreement with a local bank that allows it to borrow in increments of $1,000 at the beginning of each month, up to a total loan balance of $60,000. The interest rate on these loans is 1% per month, and for simplicity, we will assume that interest is not compounded. The company would, as far as it is able, repay the loan plus accumulated interest at the end of the quarter.

   

Required:
1.

Prepare a schedule of expected cash collections for July, August, and September and for the quarter in total. (Do not round intermediate calculations.)

           

2.

Prepare the following for merchandise inventory:

   

a.

A merchandise purchases budget for July, August, and September. (Do not round intermediate calculations.)

         
   

b.

A schedule of expected cash disbursements for merchandise purchases for July, August, and September and for the quarter in total.

         
   

3.

Prepare a cash budget for July, August, and September and for the quarter in total.

        

In: Accounting

An article compared the drug use of 288 randomly selected high school seniors exposed to a...

An article compared the drug use of 288 randomly selected high school seniors exposed to a drug education program (DARE) and 335 randomly selected high school seniors who were not exposed to such a program. Data for marijuana use are given in the accompanying table.

n Number Who
Use Marijuana
Exposed to DARE 288 142
Not Exposed to DARE 335 177

Is there evidence that the proportion using marijuana is lower for students exposed to the DARE program? Use α = 0.05.(Use pDAREpNo DARE. Round your test statistic to two decimal places and your P-value to four decimal places.)

z=

P-value=

State your conclusion.

We reject H0. We do not have convincing evidence that the proportion of students using marijuana is lower for students exposed to the DARE program than for students not exposed to the program.

We fail to reject H0. We have convincing evidence that the proportion of students using marijuana is lower for students exposed to the DARE program than for students not exposed to the program.    

We reject H0. We have convincing evidence that the proportion of students using marijuana is lower for students exposed to the DARE program than for students not exposed to the program.

We fail to reject H0. We do not have convincing evidence that the proportion of students using marijuana is lower for students exposed to the DARE program than for students not exposed to the program.

In: Math

Jessica is a recent graduate of Brenau University’s business school entrepreneurship program. The business plan that...

Jessica is a recent graduate of Brenau University’s business school entrepreneurship program. The business plan that she created before she graduated was for a business developing websites for individuals and commercial businesses. Friends and family provided funding for the start-up, and she has been in business for the last two and a half years.

Jessica had learned about the balanced scorecard in her accounting classes and has been applying some of the techniques. Her vision for this business is to provide clients with high quality websites that receive a relatively high numbers of hits. Recently, word-of mouth advertising had led to more requests for websites with creative animated graphics. As part of her balanced scorecard, she tracked the following measures over the last two years for her individual clients:

                                                                                              20x1                20x2

Average revenue per individual client                              $2,000             $1,500

Average time from start to finish (business days)           10 days            13 days

Average site ranking on top two search engines                     15                    21

Total revenue                                                                   $80,000           $78,000

Total labor cost                                                                $20,000           $22,000

Utilities cost (electricity and phone)                                 $2,100             $2,400

Number of individual clients                                                    40                    52

Employee turnover                                                                     1                      0

a.   Classify each performance measure according to one of the four balanced scorecard perspectives. Explain your reasoning.

b.   Analyze the change in each performance measure from 20X1 to 20X2. Give one possible reason for the change.

In: Accounting

Candice was a high school student on the track team and training for her upcoming cross-country...

Candice was a high school student on the track team and training for her upcoming cross-country meet. She woke up bright and early to complete a 10-mile run. Her workout ended up taking her a little longer than usual and she was sweating profusely.

As Candice cooled down from her run, Candice’s Mom yelled from the kitchen, “Candice, your breakfast is ready! Come eat. You look so pale!”

“Oh, really? I’m starving; maybe that’s why? What did you make?”

“Your favorite... eggs benedict with a side of toast and orange juice. So, how was your run? It seemed like it took you longer than usual.”

“I felt a little more tired than I usually do, but I stayed strong. Nothing to worry about,” Candice assured her.

“You need to stay healthy for the invitational meet on Saturday. As you well know, your performance on Saturday will determine your eligibility for states. Maybe you should reschedule your date with ... ”

“Mom! I’ll be fine. Trust me,” Candice exclaimed.

Candice finished her breakfast and, while taking a hot shower, felt a cramp developing in her left leg. Not thinking too much about it she took a naproxen tablet, rubbed the cramp and proceeded on with her day. After studying for about an hour she realized that the naproxen wasn’t working because her muscles still felt sore. Oh, no…this is bad timing. I have a date with Phil tonight, Candice thought. So, she took another naproxen tablet.

Half an hour later, Candice felt dizzy and lightheaded and her skin began to feel clammy, which she believed was due to the humidity. She felt her heart race and tried to calm herself, but the leg cramps started coming back. Although Candice prided herself on a high threshold for pain, she finally told her mom that something was wrong and that she needed to go to the hospital.

List the problems that Candice experienced.
Can you see any common features in Candice’s problems?
Do you think Candice overreacted by saying she wanted to go to the hospital?
Do you have a prognosis for Candice’s problems?
“Candice, honey, I think you’re overreacting. How about I take you to the urgent care?”

“Fine, Mom!”

The nurse at the urgent care took Candice’s history and physical.

History and Physical Report

Patient Candice Pearson

History

Physical

Chief complaint: Lightheadedness, fatigue, muscle cramps

Age: 17

Past medical history: Polycystic ovarian syndrome [Treatment → 150 mg spironolactone daily]

Height: 5´6˝

Past surgical history: Wisdom teeth removed (3 months ago)

Weight: 130 lbs.

Drug allergies: Penicillin

Temperature: 97.8°


Heart rate: 110 beats/min (normal: 60–100)


Blood pressure: 98/56 (normal: 120/80)


Pinch skin: skin bounces back slowly

History and Physical Report Patient: Candice Pearson History Physical Chief complaint: Lightheadedness, fatigue, muscle cramps Past medical history: Polycystic ovarian syndrome [Treatment → 150 mg spironolactone daily] Past surgical history: Wisdom teeth removed (3 months ago) Drug allergies: Penicillin Age: 17 Height: 5´6˝ Weight: 130 lbs. Temperature: 97.8° Heart rate: 110 beats/min (normal: 60–100) Blood pressure: 98/56 (normal: 120/80) Pinch skin: skin bounces back slowly.

“Wow, Mom, my heart rate’s high; it’s usually around 60.”

“Maybe you’re just nervous, honey.”

The nurse decided that Candice was probably experiencing dehydration from her run. She recommended rest and drinking plenty of fluids like water and Gatorade.

What new information has been revealed?
Which of Candice’s problems could have been caused by dehydration?
Which problems could have been caused by something other than dehydration?
Where is blood pressure monitored in your body?
Which part of the autonomic nervous system is activated when blood pressure is low?
What is the effect of this part of the autonomic nervous system on heart rate and stroke volume?
If Candice is correct and her resting heart rate is usually around 60, why is her blood pressure low?
Would you like to change or modify your prognosis?
After driving home from urgent care, Candice began to get ready for her big date night with Phil. She had a new dress picked out and invited her friend, Maria, over to help with her hair and makeup.

“You look great! Phil’s going to be blown away,” Maria encouraged her friend.

“I hope so. Though, I’m still a little nervous. I think I’m going to take a couple of my prescription pills. I missed my dose this morning.”

“Are you sure?” Maria asked.

“Yeah, it’s alright. And I think it makes me look and feel better,” Candice said reassuringly.

Phil arrived to pick up Candice for the date. Ever the gentleman, he had picked out a nice romantic Italian restaurant. Candice ordered spaghetti marinara and Phil ordered fettuccine alfredo.

They finished dinner and headed to the movies. Candice was not a fan of scary movies but agreed because Phil wanted to see it. About halfway through the movie, she started feeling a little light-headed and her heart started racing. It’s probably the blood in the scary movie messing with me, she thought. She tried to calm herself, not wanting to ruin their first date.

She turned to Phil, “Sorry, but I think something’s wrong! I feel sick!” Phil guided her out of the movie theater, where she then collapsed and complained that her chest felt really tight. Candice thought to herself, Oh no, I think I’m going to be sick. How embarrassing! There isn’t going to be a second date.

Phil called 911 and an ambulance quickly arrived.

Make a list of any new problems Candice is experiencing. Do any of Candice’s new problems correlate with your previous prognosis?
Why is Candice having chest tightness?
How does the nurse’s diagnosis of dehydration affect the blood pressure and circulation?
What did Candice eat for dinner? How could her food choice at dinner cause these problems?
List tests that the doctors should perform at the hospital.
Candice’s mother arrived at the hospital as the EMT moved Candice into the emergency room where she was placed under the care of a new resident. The resident began to check her vitals and took a report of Candice’s problems while her mother anxiously paced back and forth. He then listened to her breathing sounds, which appeared normal. Next, the resident ordered an ECG, chest x-ray, CT brain scan, and metabolic profile of Candice’s blood work. In the meantime, he asked about her previous medical history, any medication she was currently on, and what she ate recently.

“I just ate spaghetti marinara. I am on spironolactone because I have polycystic ovarian syndrome. I took two tablets right before dinner because I forgot to take it this morning. After my run earlier in the day, I had intense muscle cramps so I ended up taking two naproxen tablets. I was starting to feel better in the afternoon so I thought I would be okay to go on my date.”

The resident asked, “How much water did you drink today?”

“Not much,” Candice admitted ashamedly.

“Well, you should know spironolactone is a diuretic. Your physician should have told you to drink plenty of water when you are taking this drug. It works as an aldosterone receptor antagonist in the cells of the distal tubule in your kidney, which means that you will lose a lot of water. You need to stay hydrated,” warned the resident.

The resident then left to pick up the test results.

Fill in the table to predict the results of the initial tests.
Tests

Results

Heart rate


EKG


Chest x-ray


CT scan


Blood K+


Blood Na+



Aldosterone is responsible for controlling blood sodium and potassium levels. What type of hormone is aldosterone and which cells secrete it?
The resident returned with the tests results: the CT brain scan was normal, the EKG showed an elevated heart rate with arrhythmia, the chest x-ray was normal, and the blood work showed an electrolyte imbalance.

Here is a partial list of Candice’s blood work:

Test

Candice

Normal

Glucose, Serum (mg/dL)

82

65-99

Uric Acid, Serum (mg/dL)

4.2

2.5-7.1

Creatinine, Serum (mg/dL)

1.2

0.57-1.00

Sodium, Serum (mEq/L)

133

134-144

Potassium, Serum (mEq/L)

7.0

3.5-5.2

Chloride, Serum (mEq/L)

103

97-108

Calcium, Serum (mg/dL)

9.5

8.7-10.2


20. What abnormal values are evident in Candice’s blood work?

21. What could cause an elevated heart rate?

22. What minerals do tomatoes have in high concentrations?

23. Could the tomatoes have had an effect on the level of that mineral in Candice’s blood?

24. Use the Nernst equation (below) to calculate the equilibrium potential for potassium in a normal patient and in Candice; assume [K]in is 150 mEq/L in Candice and in normal patients, and [K]out is 4 mEq/L in normal patients.

E K+ (millivolts) = 61 log10 ([K+ ] out /[K+ ] in)

25. If the resting membrane potential exhibits the same change as the equilibrium potential for potassium, predict how Candice’s ion imbalance will affect a cell’s resting membrane potential; would Candice’s resting membrane potential be hyperpolarized or depolarized?

The resident and attending returned and talked to Candice and her mother.

“Candice, you are suffering from hyperkalemia, which means you have more potassium in your blood than normal. Two things happened to you today to create the perfect storm. First, you ate a meal high in potassium and second you took a high dose of spironolactone. The drug blocks the action of a hormone in your body called aldosterone, which works to rid your body of excess potassium, exchanging it for sodium. Decreased aldosterone activity means the level of potassium in your blood increased while the level of sodium decreased. Also, the loss of sodium in your urine causes you to also lose water.”

“So I guess that’s why it’s a diuretic,” interrupted Candice.

“Exactly. The elevated potassium levels in the fluid around your cells is responsible for your heart arrhythmia, high heart rate, and muscle cramps. I recommend staying away from potassium-rich foods like bananas and tomatoes.”

“Usually I do; I only eat apples and oranges.”

“I also suggest taking acetaminophen instead of NSAIDs, like naproxen, as it is thought that there may be some drug interaction that further increases hyperkalemia. You have to be careful what you eat; your body is losing a lot of water and sodium so hydration is key when you are on spironolactone. I recommend that your diet consists of low potassium and high sodium meals as well as a lot of water or Gatorade, especially while you are training. This could have been a lot worse if you hadn’t come in for treatment. Are there any concerns you would like to address?” asked the resident.

“No. Thank you so much! I’ll try to be more careful in the future,” said Candice.

Where is the pacemaker for the heart?
How could membrane depolarization created by elevated blood potassium level cause an increase in Candice’s heart rate?
How could the membrane depolarization created by the elevated blood potassium level cause arrhythmias?
How could the membrane depolarization created by the elevated blood potassium level cause muscle cramping?

In: Anatomy and Physiology

MB’s School of Beauty calls you because their beginning balance is off in their reconciliation window...

MB’s School of Beauty calls you because their beginning balance is off in their reconciliation window for their checking account. You log in and see that there are many transactions that were changed/deleted on the last couple of months' reconciliations. She likes to do as much she can on her own. Which of the following next steps would you take?

A. Enter a journal entry to Opening Balance Equity to compensate for the difference

B. Advise her to use the Undo button to undo the reconciliation and re-reconcile the account

C. Undo the previous months' reconciliations for her so that she can re-reconcile each month

D. Advise her to complete the reconciliation as normal, then use the auto-adjustment feature to balance the reconciliation

E. Re-enter the changed/deleted transactions and manually reconcile them in the register, then advise her to complete the current month’s reconciliation as usual

In: Accounting

Reba Dixon is a fifth grade school teacher who earned a salary of 38,000 in 2018....

Reba Dixon is a fifth grade school teacher who earned a salary of 38,000 in 2018. She is 45 years old and has been divorced for four years. She receives 1,200 of alimony payments each month from her former husband. Reba also rent out a small apartment building. This year Reba receive 50,000 of rental payments from tenant and she incurred 19,500 of expenses associated with the rental.
        Reba and her daughter Heather (20 years old at the end of the year) moved to Georgia in January of this year. Reba provides more than one half of Heather support. They had been living in Colorado for the past 15 years, but ever since her divorced, Reba has been wanting to go back to Georgia to be closer to her family. Luckily last December, a teaching position opened up and Reba and Heather decided to make a move. Reba paid a moving company 2,010 to move their personal belongings, and she and Heather spent two days driving the 1,426 miles to Georgia.
          Reba rented a home in Georgia. Heather decided to continue living at home with her mom, but she started attending school full time in January at near by university. She was awarded a & 3000 partial tuition scholarship this year and Reba help out by paying the remaining 500 tuition cost. If possible, Reba thought it would be best to claim the education credit for these expenses.
           Reba wasn't sure if she would have enough items to help her benefit from itemizing on her tax return, however she kept track of several expenses this year that she thought might qualify if she was able to itemized. Reba paid 5800 in state income taxes and 12500 in charitable contribution during the year. She also paid the following medical related expenses for herself and Heather :
Insurance premiums.     5,795
Medical care expenses   1,100
Prescription medicine         350
Nonprescription medicine. 100
New contact lenses for Heather. 200

   Shortly after the move, Reba got distracted while driving and she ran into a street sign. The accident caused 900 in damage to the car and gave her whiplash. Because the repair was less than her insurance deductible, she paid the entire cost of the repair. Reba wasn't able to work for two months after the accident. Fortunately, she receives 2000 from her disability insurance. Her employer, the central Georgia school district, paid 60%of premium on the policy as a non-taxable fringe benefits and Reba paid the remaining 40% portion.
      A few years ago, Reba acquired several investments with her portion of the divorce settlement. This year she reported the following income from her investments : 2200 of interest income from corporate bonds and 1500 interest income from city of Denver municipal bonds. Overall, Reba stock portfolio appreciated by 12000 but she did not sell any of her stock.
      Heather reported 6200 of interest income from corporate bonds she received as a gift from her father over the last several years. This was Heather only sources of income for the year. Reba had 10,000 of federal income taxes withheld by employer. Heather made 1000 estimates tax payments during the year. Reba did not make any estimate payments. Reba had qualifying insurance for purposes of the affordable care Act (ACA).

Required :

(A) Determine Reba federal income taxes due or taxes payable for current year, complete pages 1 and 2 of forms 1040 for Reba.

(b) is Reba allowed to file as a head of household or single?

(c) Determine the amount of FICA taxes Reba was required to pay on her salary.

(d) Determine Heather federal income taxes due or payable

  

In: Accounting

Use the following information to calculate the price elasticity of demand for school fees: If P=30;...

  1. Use the following information to calculate the price elasticity of demand for school fees:

If P=30; Q^d =6000

If P=50; Q^d =4000

  1. The elasticity is 0.5
  2. The elasticity is 0.8
  3. The elasticity is 1.8
  4. The elasticity is 1.2

  1. Which one of the following is a normative statement?

  1. Price rise when the government increase the quantity of money
  2. When more people find jobs, unemployment rates drop
  3. The government should invest more money in research
  4. When the price of a good increase, the quantity demanded goes down

  1. The biggest reason people face trade-off is because

  1. People tend to disagree with each other
  2. Resources are scarce
  3. People’s incomes increase and decrease with business cycles
  4. There are too many goods and services to choose from

  1. “Society should allocate more money for research” this is an example of a positive economic statement

TREU / FALSE

  1. The cross-price elasticity of beef and chicken is 2, which indicates that beef and chicken are substitutes

TRUE / FALSE  

  1. The opportunity cost of any item is whatever must be given up to obtain it.

TRUE / FALSE

  1. In the markets for factors of production in the circular- flow diagram, households are buyers, and firms are sellers.

TRUE / FALSE

  1. Regarding elasticities, the flatter the curve, the bigger the elasticity, and the smaller the elasticity. This is true:

  1. Only for seller
  2. Only for buyers
  3. For both buyers and sellers
  4. All answers are incorrect

In: Economics

Yasmin Jamieson is 18 years old and is about to graduate from an Ottawa high school....

Yasmin Jamieson is 18 years old and is about to graduate from an Ottawa high school. She must decide: which university will she attend in September? She wants to follow a 4-year undergraduate degree in Economics. Yasmin has been accepted to attend McMaster University in Ontario, Canada, and Stanford University, California, United States. She faces only one annual cost for the each of the four years she is in university: tuition. Annual tuition at McMaster is $15,000. At Stanford, annual tuition is $45,000. Assume that she is not considering the option of working after high school. Therefore, do not consider the foregone labour earnings when going to university. After graduation, Yasmin has a strong interest in Labour Economics and hopes to receive job offers from Capital Economics (near Hamilton, Canada) and from Insight Economics (near Stanford, USA).

She knows that these two companies offer different annual salaries depending on where one has graduated. Capital Economics will offer a McMaster graduate an annual salary of $128,000 and a Stanford graduate an annual salary of $160,000. Insight Economics will offer a McMaster graduate an annual salary of $175,000 and a Stanford graduate an annual salary of $250,000.

Let’s assume the following:

• Yasmin’s objective in her decision-making is to maximize the present value of net future income over her career (that is, income net of costs).

• She is certain to get job offers from both companies.

• Please ignore differences between these two cities in terms of income taxes, the exchange rate, the cost of living and moving costs.

• These annual salaries do not change for the duration of her expected career, from age 22 to 65. Hint: this time horizon is sufficiently long to use the present value (PV) approximation formula.

• However, the present value of annual tuition costs should be calculated using the expanded present value formula.

• The market interest rate is 5%. Which university would you recommend to Yasmin? Please show all your calculations and explain your recommendation. (20 points)

In: Economics