Matwirth corporation has instituted a new disciplinary policy for employees who fail a random drug test. The personnel office wishes to test to see if there is a difference in employee behavior based on the new policy. The records of 500 employee drug tests from before the new policy were randomly selected and 500 drug test results from after the new policy were also randomly selected. In the sample from before the new policy, 1.80% tested positive, while 1.40% in the sample from after the new policy tested positive.

            For the hypotheses,

            H₀: p₁ = p₂   and   H_A: p₁ > p₂,

            what is the p-value and the conclusion of this test at the 0.1 level of significance?

            8. Construct a 99% confidence interval for the population mean for a sample of size 20 with mean 5.01 and standard deviation 2.21.

WITH EXPLAINATION OF WORK

A study was conducted to test the effectiveness of a software patch in reducing system failures over a six-month period. Results for randomly selected installations are shown in the table below. The "before" value is matched to an "after" value, and the differences are calculated. The differences have a normal distribution. Test at the 1% significance level. Installation A B C D E F G H

Before 3 6 4 2 5 8 2 6

After 1 5 2 0 1 0 2 2

A) State the null and alternative hypotheses.

H₀: μ_d < 0
H_a: μ_d ≥ 0

H₀: μ_d = 0
H_a: μ_d ≠ 0    

H₀: μ_d ≤ 0
H_a: μ_d > 0

H₀: μ_d ≠ 0
H_a: μ_d = 0

H₀: μ_d ≥ 0
H_a: μ_d < 0

B) Draw the graph of the p-value.

Hannah coaches a youth soccer team . Tomorrow night, they have a game. Suppose there is a 43% chance that her team will lose. Regardless of whether her team loses, Hannah figures there is a 58% chance that a parent will complain about something to her after the game. From previous seasons, Hannah knows that the probability that her team loses and a parent complains is 35%.  (Hint: Organize and label the given information first before starting. Write out the probability statement for each question before calculating anything.)

(Round all probabilities to four decimals)

1. Suppose Hannah’s soccer team loses. What is the probability that a parent complains?

2. If a parent complains after the game, what is the probability that Hannah’s team lost?

3. What is the probability that Hannah’s team will win tomorrow night?

4. Suppose Hannah’s soccer team loses. What is the probability that a parent does not complain?

10. Locomotive Corporation is planning to repurchase part of its common stock by issuing corporate debt. As a result, the firm’s debt–equity ratio is expected to rise from 30 percent to 45 percent. The firm currently has $10 million worth of debt outstanding. The cost of this debt is 6.5 percent per year. The firm expects to have an EBIT of $3 million per year in perpetuity and pays no taxes.

a. What is the market value of the firm before and after the repurchase announcement? (0.75 point)

b. What is the expected return on the firm’s equity before the announcement of the stock repurchase plan? (0.75 point)

c. What is the expected return on the equity of an otherwise identical all-equity firm? (0.75 point)

d. What is the expected return on the firm’s equity after the announcement of the stock repurchase plan? (0.75 point)

A dietitian wishes to see if a person’s cholesterol level will change if their diet is supplemented by a certain mineral. Six randomly selected subjects had their cholesterol level measured before and then took the mineral supplement for 5 weeks. The same six subjects had their cholesterol level measured again after the 5-week supplement. The results are shown below.  Assume the two population distributions are normal and the subjects were selected independently.

Can it be concluded that the cholesterol level has changed at 5% significance level?    

Question:Which of the following is the correct calculator command to use?

2-SamTTest

ANOVA

2-SampZint

Z-Test

Z-Interval

T-Test

T-Interval

2-SampTInt

2-SampZTest

At the end of 2021, Marin Co. has accounts receivable of $754,500 and an allowance for doubtful accounts of $23,960. On January 24, 2022, it is learned that the company’s receivable from Madonna Inc. is not collectible and therefore management authorizes a write-off of $4,624.

a)

Prepare the journal entry to record the write-off. (Credit account titles are automatically indented when amount is entered. Do not indent manually.)

(b)

What is the cash realizable value of the accounts receivable before the write-off and after the write-off?

At the end of 2016, Coronado Industries has accounts receivable of $762,000 and an allowance for doubtful accounts of $22,520. On January 24, 2017, it is learned that the company’s receivable from Madonna Inc. is not collectible and therefore management authorizes a write-off of $4,398.

(a) Prepare the journal entry to record the write-off. (Credit account titles are automatically indented when amount is entered. Do not indent manually.)

(b) What is the cash realizable value of the accounts receivable before the write-off and after the write-off?

Zetatron is an​ all-equity firm with 230 million shares​ outstanding, which are currently trading for ​$12.83 per share. A month​ ago, Zetatron announced it will change its capital structure by borrowing ​$486 million in​ short-term debt, borrowing $ 504 million in​ long-term debt, and issuing ​$387 million of preferred stock. The ​$1 comma 377 million raised by these​ issues, plus another $ 87 million in cash that Zetatron already​ has, will be used to repurchase existing shares of stock. The transaction is scheduled to occur today. Assume perfect capital markets. a. What is the market value balance sheet for Zetatron i. Before this​ transaction? ii. After the new securities are issued but before the share​ repurchase? iii. After the share​ repurchase? b. At the conclusion of this​ transaction, how many shares outstanding will Zetatron​ have, and what will the value of those shares​ be?

Business Ethics UK Law

Kanye is employed as a salesperson for a large electronics retailer. He often discusses with fellow employees how he considers it his responsibility as a salesperson to sell as much as possible. The company currently sells both videotapes and videotape players. After a recent meeting, Kanye has learned that after Christmas the store will no longer be stocking these items because of a switch to DVD technology. The sales staff is told to sell as much of the older video technology as possible before the store discontinues it. One afternoon, before Christmas, a customer approaches Kanye and asks whether he should buy a videotape player now, mentioning that he wants to build a large collections of films. How should Kanye reply to this customer? Also, if the customer was Kanye’s very poor friend, then is the same normative decision applicable?