Nonparametric Methods
In this assignment, we will use the following nonparametric methods:

• The Wilcoxon signed-rank test: The Wilcoxon signed-rank test is the nonparametric test analog of the paired t-test.
• The Wilcoxon rank-sum test or the Mann-Whitney U test: The Wilcoxon rank-sum test is an analog to the two-sample t-test for independent samples.

Part 1: Wilcoxon Signed-Rank Test

Let's take a hypothetical situation. The World Health Organization (WHO) wants to investigate whether building irrigation systems in an African region helped reduce the number of new cases of malaria and increased the public health level.

Data was collected for the following variables from ten different cities of Africa:

• The number of new cases of malaria before the irrigation systems were built
• The number of new cases of malaria after the irrigation systems were built

Table 1: Cases of Malaria

Using the Minitab statistical analysis program to enter the data and perform the analysis, complete the following:

• Run a sample Wilcoxon signed-rank test to show whether there is a statistically significant difference between the number of cases before and after the irrigation systems were built.
• Obtain the rank-sum.
• Determine the significance of the difference between the groups.
• Determine whether building these systems helped reduce new cases of malaria.
• In a Microsoft Word document, provide a written interpretation of your results.

1. Horizontal siding may be attached

2. Structural steel members are

3. Light-gauge steel studs are attached to top and bottom tracks using

4. A length of LVL lumber is more likely to warp or deform than sawn lumber of an equivalent size and length.

True

False

5. Light-gauge steel studs are attached to top and bottom tracks using

rivets.

staples.

nails.

bolts in predrilled holes.

self-tapping screws.

6. A length of LVL lumber is more likely to warp or deform than sawn lumber of an equivalent size and length.

True

False

7. Distinguishing characteristic(s) of platform framing construction include (choose most complete overall answer)

8. In which of the following situations would a light-gauge steel connector be used?

Pratt is ready to graduate and leave College Park. His future employer (Ferndale Corp.) offers the following four compensation packages from which Pratt may choose. Pratt will start working for Ferndale on January 1, year 1.

Assume that the restricted stock is 1,000 shares that trade at $5 per share on the grant date (January 1, year 1) and are expected to be worth $10 per share on the vesting date at the end of year 1 and that no 83(b) election is made. Assume that the NQOs (100 options that each allow the employee to purchase 10 shares at $5 exercise price). The stock trades at $5 per share on the grant date (January 1, year 1) and is expected to be worth $10 per share on the vesting date at the end of year 1 and that the options are exercised and sold at the end of the year. Also assume that Pratt spends on average $3,000 on health-related costs that would be covered by insurance if he has coverage. Assume that Pratt's marginal tax rate is 35 percent. Assume that Pratt spends $3,000 in after-tax dollars for health expenses when he doesn't have health insurance coverage (treat this as an outflow), and that there is no effect when he has health insurance coverage. (Ignore FICA taxes and the time value of money considerations).

Required:

1. What is the after-tax value of each compensation package for year 1?
2. If Pratt’s sole consideration is maximizing after-tax value for year 1, which scheme should he select?

In an amusement park ride called The Roundup, passengers stand inside a 19.0 m -diameter rotating ring. After the ring has acquired sufficient speed, it tilts into a vertical plane

a)Suppose the ring rotates once every 4.50 s . If a rider's mass is 55.0 kg , with how much force does the ring push on her at the top of the ride?

b)Suppose the ring rotates once every 4.50 s . If a rider's mass is 55.0 kg , with how much force does the ring push on her at the bottom of the ride?

c)What is the longest rotation period of the wheel that will prevent the riders from falling off at the top?

Mercer Corporation acquired $400,000 of Park Company’s bonds on June 30, 2018, for $409,991.12. The bonds carry a 12% stated interest rate and pay interest semiannually on June 30 and December 31. The appropriate market interest rate is 11%, and the bonds are due June 30, 2021.

Required:

I was walking my dog Baroness in the park yesterday. She’s really sweet and I wanted to get a picture of her – a really detailed picture of her – so I set the shutter speed to 1/250th of a second. I noticed that an f/stop setting of 2.8 gave me a really nice picture of her - that is to say, the exposure (the amount of light) was really good. BUT I noticed that the tree behind her and the pond weren’t in focus and I really wanted to see all of it. So I decided change the settings so that Bear and the scenery were in focus. What settings should I change on my camera?

-. And in what direction?

. Later we were tossing football in a big grassy area. She’s a great receiver – Air Bud has nothing on her. I told her to “go long” up the sideline and she took off running. I was thinking about how to get a good picture of her when she was moving so fast. As she ran back past me I set my shutter speed to 1/1000th of a second in order to get a good shot of her. What should I set my f/stop setting to in order to have the same total exposure? (original settings are in bold)

f-stop     1, 1.4, 2, 2.8, 4, 5.6, 8, 11, 16, 22, 32

shutter    1/15, 1/30, 1/60, 1/125, 1/250, 1/500, 1/1000

Mercer Corporation acquired $400,000 of Park Company’s bonds on June 30, 2018, for $409,991.12. The bonds carry a 12% stated interest rate and pay interest semiannually on June 30 and December 31. The appropriate market interest rate is 11%, and the bonds are due June 30, 2021.

Required: 1. Prepare an investment interest income and premium amortization schedule, using the:

a. straight-line method

b. effective interest method

2. Prepare journal entries to record the December 31, 2018, and December 31, 2020, interest receipts using both methods.

At a company picnic held at an out-of-town park, a co-worker’s child falls off the monkey bars. Based on the bruising and slight change in shape of her forearm, you suspect a fracture. The parents give permission for you to give first aid care, but they insist on transporting her to advanced care themselves. You search for materials in your environment to use for splinting her injury.

What material could you use to splint the child's arm?

What parts of the arm must be immobilized?

Describe how you would apply the splint.

Alex is driving down Park Avenue on her way to meet friends for dinner. She receives a text message, with a change in the evening’s plans from a sushi bar to a pizza place. Upset about the switch from sushi to pizza, Alex focuses on her phone, taking her hands off the wheel and her eyes off the road as she explores alternative restaurant menus in the group text. Alex’s car slams into Robert’s car in front of her, causing Robert’s car to veer off the road into the center median. Robert’s head hits the windshield and he sustains a concussion. Robert’s car hits a trash can. The force of the impact causes the trash can to shatter, sending the trash can fragments flying. Lily, window shopping a quarter of a mile away, is hit by the flying debris and falls, breaking her arm on the icy sidewalk. Robert sues Alex, and Lily also sues Alex. Judgment for whom in each case?