A consumer products testing group is evaluating two competing brands of tires, Brand 1 and Brand 2. Tread wear can vary considerably depending on the type of car, and the group is trying to eliminate this effect by installing the two brands on the same random sample of

10

cars. In particular, each car has one tire of each brand on its front wheels, with half of the cars chosen at random to have Brand 1 on the left front wheel, and the rest to have Brand 2 there. After all of the cars are driven over the standard test course for

20,000

miles, the amount of tread wear (in inches) is recorded, as shown in Table 1.

Based on these data, can the consumer group conclude, at the

0.05

level of significance, that the mean tread wears of the brands differ? Answer this question by performing a hypothesis test regarding

μd

(which is

μ

with a letter "d" subscript), the population mean difference in tread wear for the two brands of tires. Assume that this population of differences (Brand 1 minus Brand 2) is normally distributed.

Perform a two-tailed test. Then fill in the table below. Carry your intermediate computations to at least three decimal places and round your answers as specified in the table. (If necessary, consult a list of formulas.)

SCENARIO 1 You are caring for Miss Cassidy, age 50, in her own home. She was diagnosed with colon cancer four weeks ago. She had colon surgery and a permanent colostomy was created in the descending colon. She is very thin and has no appetite. She complains of lower back pain, has little energy and sleeps most of the day. She has a sister who lives several miles away but visits every second day. Miss Cassidy is very embarrassed about her colostomy. She says it smells and she can never predict when it will move. She has been taught to change the bags but requires constant reinforcement, assistance, and support.

Option 1

41. In caring for Miss Cassidy’s ostomy for hygiene you would:

a) Provide privacy, change when stool present, use gloves and deodorizers

b) Change once a day, gloves are not necessary unless there is a spill

c) Let her change it when she wants to and don’t worry about it, give her gloves

d) Only change it once a week or when it’s overflowing, use gloves and deodorizers

42. When assisting with ostomy care, you should:

a) Wash and dry the stoma and call the nurse to put on a new appliance

b) Clean the skin around the stoma with mild soap and warm water, rinse and pat dry

c) It’s not necessary to wash the stoma, just change the appliance

d) Wipe with a wet, cool cloth and put on a new appliance

43. Miss Cassidy wonders if her diet is affecting the consistency and frequency of her stools. As her PSW you would suggest that:

a) She should speak with the team care coordinator about her diet

b) She should keep track of how much meat she is eating daily

c) She shouldn’t worry about her diet; just concentrate on gaining some weight

d) Direct her to helpful on-line resources about colostomies and diet

Munch N’ Crunch Snack Company is considering two possible investments: a delivery truck or a bagging machine. The delivery truck would cost $32,207.2 and could be used to deliver an additional 50,000 bags of pretzels per year. Each bag of pretzels can be sold for a contribution margin of $0.38. The delivery truck operating expenses, excluding depreciation, are $0.52 per mile for 17,000 miles per year. The bagging machine would replace an old bagging machine, and its net investment cost would be $22,777.5. The new machine would require three fewer hours of direct labor per day. Direct labor is $10 per hour. There are 250 operating days in the year. Both the truck and the bagging machine are estimated to have four-year lives. The minimum rate of return is 11%. However, Munch N’ Crunch has funds to invest in only one of the projects.

a. Compute the internal rate of return for each investment. Use the above table of present value of an annuity of $1. If required, round your present value factor answers to three decimal places and internal rate of return to the nearest percent.

b. The bagging machine rate of return was than the minimum rate of return requirement of 11% while the delivery truck rate of return was than the minimum rate of return requirement of 11%. Therefore the recommendation is to invest in the .

Each of the following are independent situations. For each of the situations, use the 5-step process to determine when revenue can be recognized by indicating for each of the situations:

1. If a contract exists

2. The performance obligations in the contract

3. The transaction price in the contract

4. How the transaction price is allocated to the performance obligations.

5. When revenue is recognized

Situation A:

Freddy Flyer books travel on an airline on June 2, 2027. He pays $500 for a round-trip ticket that departs July 15, 2027 and returns July 20, 2027. In addition, once the round-trip ticket is used, the airline credits Freddy’s frequent flyer account for 500 miles based on a $.01 value for each frequent flyer point.

Situation B:

Dave’s Discount Emporium and Creative Construction, Inc. enter into a contract on May 1, 2027. Creative will build a new warehouse for Dave at a price of $2,000,000. Dave will make four equal payments to Creative over the 1-year construction period with the first payment made on May 1, 2027 and the other payments made every 4 months. Dave can cancel the construction at any time and will own any parts of the construction to date; however, it must pay Creative for work done up to the date of cancellation. The building is completed on April 30, 2018.

Situation C:

Doggone Good Donuts agrees to supply donuts and coffee to Better Brakes, a local business that manufacturers automobile break components, on a daily basis. The contract starts on January 1, 2027, and runs for 1 year. Doggone charges $400 per week for the donuts and coffee.

Situation D:

The Northville Nuggets sell four season tickets to a customer. The Nuggets play 10 regular season games, and the cost of one season ticket is $250.

Situation E:

Lazy Days Inc. enters into a contract with Hyper Hands Co. to sell it $50,000 of goods with delivery on May 10, 2027. Lazy manufactured the goods at a cost of $33,000. The contract is signed on April 15, 2027 and Hyper pays $25,000 at that time Lazy delivers the goods on May 10, 2027, and receives the final payment.

1. Airlines are doing better right now because of lower fuel prices, but it is still a highly competitive industry with narrow margins and low profit per passenger.   Some airlines have extra charges of up to $50 for checked bags, some are charging for meals, and one has considered charging for access to bathrooms. One airline announced a plan to charge by the pound. Is this reasonable? Is it price discrimination?

For those that do not understand how aircraft work I offer the following. The more weight on the plane, the more energy (fuel) it takes to lift it. Also, the amount of weight a plane can lift includes the weight of fuel, so the more weight in the plane (bags and people) the less fuel the plane can take on. Aircraft full of heavy people and heavy bags need more fuel to get the energy, but may not be able to put on the amount of fuel they need because it weighs too much (six pounds a gallon). This limits the range (how far the plane can fly).

Is it price discrimination or just plain discrimination to charge very large people for a second seat? One airline announced a plan to do so. If they do, should we just let them charge by the pound? Let’s say you and your bags get on a scale and get charged $1.00 per pound per 1,000 miles. Would that be fair?

NOTE: Remember, I am asking you a normative question here but you need to back up with some positive analysis and not just an emotional response. Part of the point of these types of questions is to think about who gets to dictate what the definition of fair is?

2. A classic example of monopolistic competition is the restaurant industry. In what ways does this industry show the characteristics of the monopolistic competition market?

3. George says, "If the amount of product differentiation in a monopolistically competitive industry is very small, the outcome in that market will not be very different than if it were a perfectly competitive industry." Explain if he is correct and how you would respond to his reasoning.

A kayak race is held each August on the South Arm of Lake Charlevoix, Charlevoix County, Michigan. The "course" starts at the public launch in East Jordan, MI and ends at the DNR launch at Dutchman's Bay, a distance of approximately two nautical miles. Participants are individual paddlers in identical Old Town sit inside Sorrento 106sk kayaks. The organizer wants to investigate if there is a relationship between the amount of experience (three categories) and minutes to complete the course. She wants to control for age. She also wants suggestions about other data that might be collected to find additional relationships (e.g. water temperature).

The data from a random sample from a recent year's event is provided below:

KAYAK RACE DATA SET

Experience

1 = participation in 10 or more kayak events

2 = participation in 4 to 9 kayak events

3 = participation in 3 kayak events

Complete the following:

Import / post the data above to create an SPSS data file (sav)

Conduct an ANCOVA analysis

Respond to the organizers current research question

Propose two future data categories (not including example above of water temperature) and rationale for each.

A realtor studies the relationship between the size of a house (in square feet) and the property taxes (in $) owed by the owner. The table below shows a portion of the data for 20 homes in a suburb 60 miles outside of New York City. [You may find it useful to reference the t table.]

a-1. Calculate the sample correlation coefficient r_xy. (Round intermediate calculations to at least 4 decimal places and final answers to 4 decimal places.)

a-2. Interpret r_xy.

a. The correlation coefficient indicates a positive linear relationship.

b. The correlation coefficient indicates a negative linear relationship.

c. The correlation coefficient indicates no linear relationship.

b. Specify the competing hypotheses in order to determine whether the population correlation coefficient between the size of a house and property taxes differs from zero.

a. H₀: ρ_xy = 0; H_A: ρ_xy ≠ 0

b. H₀: ρ_xy ≥ 0; H_A: ρ_xy < 0

c. H₀: ρ_xy ≤ 0; H_A: ρ_xy > 0

c-1. Calculate the value of the test statistic. (Round intermediate calculations to at least 4 decimal places and final answer to 3 decimal places.)

c-2. Find the p-value.

a. p-value < 0.01

b. p-value  0.10

c. 0.05  p-value < 0.10

d. 0.02  p-value < 0.05

e. 0.01  p-value < 0.02

d. At the 5% significance level, what is the conclusion to the test?

a. Reject H₀; we can state size and property taxes are correlated.

b. Reject H₀; we cannot state size and property taxes are correlated.

c. Do not reject H₀; we can state size and property taxes are correlated.

d. Do not reject H₀; we cannot state size and property taxes are correlated.

(1 point) Fueleconomy.gov, the official US government source for fuel economy information, allows users to share gas mileage information on their vehicles. The histogram below shows the distribution of gas mileage in miles per gallon (MPG) from 14 users who drive a 2012 Toyota Prius. The sample mean is 53.3 MPG and the standard deviation is 5.2 MPG. Note that these data are user estimates and since the source data cannot be verified, the accuracy of these estimates are not guaranteed. Report all answers to 4 decimal places.

1. We would like to use these data to evaluate the average gas mileage of all 2012 Prius drivers. Do you think this is reasonable? Why or why not?

? Yes No , because  ? the data distribution seems approximately normal there are 14 data points in the sample user estimates are reliable user estimates are not reliable .

The EPA claims that a 2012 Prius gets 50 MPG (city and highway mileage combined). Do these data provide strong evidence against this estimate for drivers who participate on fueleconomy.gov? Conduct a hypothesis test. Round numeric answers to 3 decimal places where necessary.

2. What are the correct hypotheses for conducting a hypothesis test to determine if these data provide strong evidence against this estimate for drivers who participate on fueleconomy.gov? (Reminder: check conditions)

A. ?0:?=50H0:μ=50 vs. ??:?≠50HA:μ≠50
B. ?0:?=50H0:μ=50 vs. ??:?>50.3HA:μ>50.3
C. ?0:?=53.3H0:μ=53.3 vs. ??:?≠53.3HA:μ≠53.3
D. ?0:?=50.3H0:μ=50.3 vs. ??:?<50HA:μ<50

3. Calculate the test statistic.

4. Calculate the p-value.

5. How much evidence do we have that the null model is not compatible with our observed results?

A. some evidence
B. little evidence
C. extremely strong evidence
D. strong evidence
E. very strong evidence

6. Calculate a 95% confidence interval for the average gas mileage of a 2012 Prius by drivers who participate on fueleconomy.gov.

( ,  )

Instructions: Complete the following queries using the Colonial Adventure Tours database. You will find the description including data of this database in page 16 to page 20 in Chapter 1 in your Concepts of Database Management textbook. For each following question, create a query using the Query Design option in Access. Make sure that you save and name each query in the following manner: Query1, Query2......Query14. Query Questions:

Queries:

1. List the name of each trip that does not start in New Hampshire (NH).

2. List the last name of each guide that does not live in Massachusetts (MA).

3. List the name and start location for each trip that has the type Biking.

4. List the name of each trip that has the type Hiking and that has a distance greater than six miles.

5. List the name of each trip that has the type Paddling or that is located in Vermont (VT).

6. List the customer number, customer last name, and customer first name of each customer that lives in New Jersey (NJ), New York (NY) or Pennsylvania (PA).

7. How many trips have a type of Hiking or Biking?

8. List the trip name and state for each trip that occurs during the Summer season. Sort the results by trip name within state.

9. How many trips originate in each state?

10. How many reservations include a trip with a price that is greater than $20 but less than $75?

11. Colonial Adventure Tours calculates the total price of a trip by adding the trip price plus other fees and multiplying the result by the number of persons included in the reservation. List the reservation ID, trip ID, customer number, and total price for all reservations where the number of persons is greater than four. Use the column name TOTAL_PRICE for the calculated field.

12. What is the average distance and the average maximum group size for each type of trip?

13. How many current reservations does Colonial Adventure Tours have and what is the total number of persons for all reservations?

1. Which of the following are necessary conditions for thunderstorm development?

     _______a. moisture in the air

     _______b. instability

     _______c. a lifting process

     _______d. (all of the above)

2. Rapid precipitation growth starts to take place in thunderstorm cell during which stage of evolution?

     _______a. cumulus or developing

     _______b. mature

     _______c. dissipating

     _______d. (any of the above)

3. A long narrow band of closely spaced thunderstorm cells is called a

     _______a. supercell.

     _______b. mesoscale convective system.

     _______c. squall line.

     _______d. Texas brawl.

4. Which type of thunderstorm generally produces the strongest tornadoes?

     _______a. multicell thunderstorm complex

     _______b. air mass thunderstorm

     _______c. supercell

     _______d. squall line thunderstorm

5. The rotating updraft of a mesocyclone is the result of

     _______a. twisting and turning.

     _______b. bobbing and weaving.

     _______c. tilting and stretching.

     _______d. shaking and baking.

6. For supercell formation, you need

     _______a. warm moist air near the surface.

     _______b. a lower tropospheric southerly flow with strong vertical wind shear.

     _______c. an unstable atmosphere.

     _______d. (all of the above)

7. Which region of the continental United States experiences the most days with large

    hail per year?

     _______a. the Great Plains.

     _______b. central Florida.

     _______c. the Pacific Northwest.

     _______d. New England.

8. Which of the following statements is false?

     _______a. Tornadoes form only in thunderstorms.

     _______b. Tornadoes form only in supercell thunderstorms.

     _______c. Tornadoes come in varying sizes and shapes.

     _______d. The strongest tornadoes are comparatively rare.

9. The season of maximum tornado frequency in the continental United States is

     _______a. winter.

     _______b. spring.

     _______c. summer.

     _______d. fall.

10. The only hazard usually associated with most air mass thunderstorms is

     _______a. large hail.

     _______b. hurricane force downburst winds.

     _______c. strong tornadoes.

     _______d. lightning.

11. The diameter of the largest tornado ever recorded was around

      _______a. 500 feet.

      _______b. 1,000 feet.

      _______c. one-half mile.

      _______d. two and one-half miles.

12. The majority of U.S. tornadoes move in which direction?

      _______a. toward the northeast

      _______b. toward the south

      _______c. toward the west

      _______d. toward the northwest