Questions
A randomly selected freshman takes English with probability 0.7, takes Math with probability 0.5, and takes...

  1. A randomly selected freshman takes English with probability 0.7, takes Math with probability 0.5, and takes either English or Math with probability 0.8. What is the probability of taking both English and Math?

  1. Two mutually exclusive events A and B have P(A) = 0.2, P(B) = 0.3. Find P (A or B).

  1. Two independent events A and B have P(A) = 0.2, P(B) = 0.3. Find P (A or B).

  1. If P (A | B) = 0.8 and P(B) = 0.6, find P (A and B).
  1. Given the following table, evaluate

Yes

No

No opinion

total

Men

80

160

60

300

Women

100

130

70

300

total

180

290

130

P(No), P (Woman and Yes), P (Man | Yes), P (No opinion | Woman), P(Men or No Opinion).

Are Women and No mutually exclusive?

Are Women and No independent?

  1. A box contains 5 blue chips, 4 red chips, and 7 green chips. Select 10 chips at random.
  1. In how many ways can this be done?
  2. How many of these selections consist of 3 blue chips, 2 red chips, and 5 green chips?

(do not simplify your answers, leave them in terms of binomial coefficients).

In: Statistics and Probability

FINANCIAL LEVERAGE EFFECTS - Hello! This is all one question, thank you very much in advance!...

FINANCIAL LEVERAGE EFFECTS - Hello! This is all one question, thank you very much in advance! Will thumbs up for answer! :D

The Neal Company wants to estimate next year's return on equity (ROE) under different financial leverage ratios. Neal's total capital is $13 million, it currently uses only common equity, it has no future plans to use preferred stock in its capital structure, and its federal-plus-state tax rate is 40%. The CFO has estimated next year's EBIT for three possible states of the world: $4.1 million with a 0.2 probability, $2.9 million with a 0.5 probability, and $0.3 million with a 0.3 probability. Calculate Neal's expected ROE, standard deviation, and coefficient of variation for each of the following debt-to-capital ratios. Do not round intermediate calculations. Round your answers to two decimal places at the end of the calculations.

Debt/Capital ratio is 0.

RÔE = %
σ = %
CV =

Debt/Capital ratio is 10%, interest rate is 9%.

RÔE = %
σ = %
CV =

Debt/Capital ratio is 50%, interest rate is 11%.

RÔE = %
σ = %
CV =

Debt/Capital ratio is 60%, interest rate is 14%.

RÔE = %
σ = %
CV =

In: Finance

In the early 20th century, the French Canadian microbiologist Félix d’Hérelle used a virus called a...

In the early 20th century, the French Canadian microbiologist Félix d’Hérelle used a virus called a bacteriophage (“phage”) to successfully treat some diseases caused by bacteria, such as dysentery and cholera. Subsequent experiments with “phage therapy” yielded mixed results; however, and enthusiasm quickly waned—especially once antibiotics became available in the 1940s. The therapy is not currently approved in the United States.

Phage therapy involves obtaining a pure culture of a disease-causing bacterium and exposing samples of the culture to different phages to see which ones kill the bacterium. The successful phage is then administered to a patient. For skin infections, the phage is applied directly to the infected area. For systemic diseases, the phage may be given orally or delivered intravenously.

Imagine you are part of a hospital medical team conveyed to treat Jerry, a 71-year-old diabetic patient, who has been suffering from a persistent infection on his foot. His doctor has tried multiple topical antibiotics, but the infection continues to worsen, so the doctor admitted him to your hospital for a new intravenous antibiotic treatment. To Jerry’s relief, the infection cleared up; however, two weeks later, the infection returned—worse than ever. Jerry’s doctor explains that the bacterium causing the infection is a multidrug resistant strain and that Jerry’s foot will need to be amputated.

Jerry’s sister, a nurse, mentions that she studied bacteriophages and asks the doctor whether phage therapy is a treatment option.

As a member of Jerry’s medical team, answer these questions:

  • How would you respond to Jerry’s sister?
  • Which type of phage would be used for phage therapy: a lytic or a lysogenic phage?
  • What are the drawbacks of phage therapy? What are the advantages?

In: Nursing

Suppose that you won an exclusive bid to sell Christmas trees from National Park Service (NPS)....

Suppose that you won an exclusive bid to sell Christmas trees from National Park Service (NPS). However, NPS requires that you plant one and a half multiple of any number of trees you cut. For example, if you cut 4 trees, you have to plant 8 trees. If you cut 9, you have to plant 27 trees. The NPS may argue that the number of trees that survive is proportional to the number of tree that you grow. Or, they might just do so to prevent you from cutting all trees. Assume further that the cost of cutting and transporting a tree is $2. The cost of growing a tree is $1.  
Questions:
A.) Write an equation that describes total cost of cutting any number of trees.
B.) Graph total cost function
C.) Derive and graph the average cost equation
D.) Derive and graph the marginal cost equation

Now, assume that as a monopolist, you can sell Christmas trees directly to customers and charge them a higher retail price. Or, on the other hand, you can sell Christmas tree to retail stores and charge them lower wholesale price. It is logical to assume that ordinary customer demand tends to be less elastic than the demand of retail stores. Assume that you estimate the demand of retail stores and customers and find:

P= 3000 – 0.5Q  (Wholesale demand)
P= 2000-2Q   (Retail Demand)

Questions
E) Write the equations that describe total revenue for each market
F.) Graph your total revenue equations
G.) Derive the marginal revenue equations for each market
H.) Graph your answer
E
I.) Find the profit maximizing price and quantity for each market
J.) Write the equation that describe total revenue for the two market combined
K.) Derive the marginal revenue equations for the two markets combined
L.) Graph your answer
M.) Find the profit maximizing price and quantity for both markets combined.
N.) What is better, to combine both market and charge a single price or segregate the two markets and charge different prices? Explain your answer

In: Economics

A group of 500 unicorns have magically appeared at Griffith Park. Researchers have speculated social distancing...

A group of 500 unicorns have magically appeared at Griffith Park. Researchers have speculated social distancing restrictions have enabled them to grace our lands. Interestingly, the genetic makeup of unicorns is unlike that of humans. They are triploid species, meaning that 3 alleles make up a given genotype. Researchers have observed variation in their coat colors with 40 unicorns having red coats (WWw), 250 white coats (www), 110 black coats (WWW), and 100 blue coats (wwW).

A. Calculate the genotype frequency for each given genotype: WWw, www, WWW, and wwW.

B. Calculate the allele frequency for each given allele: W and w.

C. Fast forward 50 years into the future, a new generation of unicorns have emerged with a total of 150. Researchers make the following observation: 5 red coats (WWw), 130 white coats (www), 7 black coats (WWW), and 8 blue coats (wwW). Compare this generation to the parent generation. Is the new generation of unicorns undergoing Hardy Weinberg Equilibrium? If not, list at least 2 evolutionary forces that may have occurred.

In: Biology

4) Last year we went to Zanvoort Circuit Park in North Holland to retest how many...

4) Last year we went to Zanvoort Circuit Park in North Holland to retest how many laps women and men drivers could do in half an hour. Historical data available gave us a basis for standard deviations of 3.5 and 2.63 laps, respectively Use men pilots as  x̄1. Below are the summaries of our new findings:

(INCLUDE SKETCH) (ROUND 5 DECIMAL PLACES)

Laps/30 minutes Mean SD n
Women Pilots 17.91 3.39 50
Men Pilots 19.39 2.52 50

a) Find a 95% confidence interval for the difference here. Explain the meaning of the results.

b) Now perform the appropriate hypothesis test, and explain your results.

In: Statistics and Probability

4) Last year we went to Zanvoort Circuit Park in North Holland to retest how many...

4) Last year we went to Zanvoort Circuit Park in North Holland to retest how many laps women and men drivers could do in half an hour. Historical data available gave us a basis for standard deviations of 3.5 and 2.63 laps, respectively Use men pilots as  x̄1. Below are the summaries of our new findings:

(Show all work for credit. Including Normalcdef(a,b,c,d), INVorm(a,b,c) z, z*,SD,SE and CI.Do not forget to check conditions for each story, and sketches for hypothesis only. Round answers to the nearest five decimal places. PLEASE BE NEAT (If you can handwrite the answer to this question PLEASE), and show all formulas!!!)

Laps/30 minutes Mean SD n
Women pilots 17.91 3.39 50
Men pilots 19.39 2.52 50

a) Find a 95% confidence interval for the difference here. Explain the meaning of the results.

b) Now perform the appropriate hypothesis test, and explain your results.

In: Statistics and Probability

he March 31, 2020, adjusted trial balance for Amusement Park Repair is shown below with accounts...

he March 31, 2020, adjusted trial balance for Amusement Park Repair is shown below with accounts in alphabetical order.

Debit Credit
Accounts payable $ 31,000
Accounts receivable $ 48,000
Accumulated depreciation, equipment 9,000
Accumulated depreciation, truck 21,000
Cash 14,400
Depreciation expense 3,800
Equipment 19,000
Franchise 21,000
Gas and oil expense 7,500
Interest expense 450
Interest payable 750
Land not currently used in business operations 148,000
Long-term notes payable1 35,000
Notes payable, due February 1, 2021 7,000
Notes receivable2 6,000
Intangible asset 7,000
Prepaid rent 14,000
Rent expense 51,000
Repair revenue 266,000
Repair supplies 13,100
Repair supplies expense 29,000
Truck 26,000
Unearned repair revenue 12,600
Vic Sopik, capital 74,900
Vic Sopik, withdrawals 49,000
Totals $ 457,250 $ 457,250


1$5,000 of the long-term note payable is due during the year ended March 31, 2021.
2$2,000 of the notes receivable will be collected by March 31, 2021.

Calculate each of the following:

b)property plant and equipment

c)intangible assets

d)non-current liabilities

e) non current investment

f) current liabilities

g total assets

total liabilities

total liabilities and equity

In: Accounting

Donald smith is a 37 year old white , fair skinned, blue eyed park ranger who...

Donald smith is a 37 year old white , fair skinned, blue eyed park ranger who enjoys fishing and skiing. He comes to the clinic for evaluation of a changing mole.

subjective data
*History of a mole on his left cheek from birth that has become hard, scaly and lumpy over the last 3 months
* father and sister treated for malignant melanoma in the last 10 years
* Anxious that the mole might be cancer and require surgery

objective data

* Has a 6mm nevus blue black in color, scalloped with vaguely defined borders
* Two dysplastic nevi found on neck

diagnostic studies

1. what risk factors for malignant melanoma does this client have ?
2. what is the prognosis with this stage of malignant melanoma?
3. what would the nurse include in a patient teaching plan to address further sun exposure to this patient?
4. what is the priority of care for this client?

In: Nursing

Waterways has two major public-park projects to provide with comprehensive irrigation in one of its service...

Waterways has two major public-park projects to provide with comprehensive irrigation in one of its service locations this month. Job J57 and Job K52 involve 15 acres of landscaped terrain, which will require special-order, sprinkler heads to meet the specifications of the project. Using a job cost system to produce these parts, the following events occurred during December.

Raw materials were requisitioned from the company’s inventory on December 2 for $5,058; on December 8 for $1,056; and on December 14 for $3,459. In each instance, two-thirds (2/3) of these materials were for J57 and the rest for K52.

Six time tickets were turned in for these two projects for a total amount of 18 hours of work. All the workers were paid $17.5 per hour. The time tickets were dated December 3, December 9, and December 15. On each of those days, 6 labor hours were spent on these jobs, two-thirds (2/3) for J57 and the rest for K52.

The predetermined overhead rate is based on machine hours. The expected machine hour use for the year is 2,110 hours, and the anticipated overhead costs are $844,000 for the year. The machines were used by workers on projects K52 and J57 on December 3, 9, and 15. Six machine hours were used for project K52 (2 each day), and 8.5 machine hours were used for project J57 (2.5 the first day and 3 each of the other days). Both of these special orders were completed on December 15, producing 200 sprinkler heads for J57 and 100 sprinkler heads for K52.

Additional job order activities during this period included:
Dec. 1 Purchased raw materials from Durbin Supply Company on account for $53,200.
Dec. 2 Issued $40,000 of direct materials from the company’s inventory to jobs other than K52 and J57 and $3,000 of indirect materials.
Dec. 12 Paid Waterways’ factory salaries and wages for $65,500.
Dec. 13 Paid the factory’s water bill of $8,900.
Dec. 18 Transferred $49,500 of costs from other completed jobs to finished goods.
Dec. 21 Paid the factory’s electric bill of $12,100 for Waterways’ factory.
Dec. 31 Made adjusting entries forth factory that included accrued property taxes of $12,000, prepaid insurance of $8,800, and accumulated depreciation of $16,100.
Set up the job cost sheets for Job No. J57 and Job No. K52. Determine the total cost for each manufacturing special order for these jobs. (Round unit costs to 2 decimal places, e.g. 12.25.)
Job No. J57 Job No. K52
Total Cost $ $
Unit Cost $ $
Journalize the activities from these job cost sheets in the general journal. Also, journalize the other costs that occurred during this period. (Credit account titles are automatically indented when amount is entered. Do not indent manually. Record journal entries in the order presented in the problem. Round answers to 0 decimal places, e.g. 5,275.)

Date

Account Titles and Explanation

Debit

Credit

(To assign materials to jobs J57 & K52)

(To assign materials to jobs and overhead)

(To assign labor to jobs J57 & K52)

(To assign overhead to jobs J57 & K52)

(To assign labor to jobs J57 & K52)

(To assign overhead to jobs J57 & K52)

(To assign labor to jobs J57 & K52)

(To assign overhead to jobs J57 & K52)

(To record completion of jobs J57 & K52)

Assuming that Manufacturing Overhead has a debit balance of $3,600, determine whether overhead has been under/over applied and make the adjusting entry. (Credit account titles are automatically indented when amount is entered. Do not indent manually.)

Date

Account Titles and Explanation

Debit

Credit

In: Accounting