A researcher is interested in the effects of a new weight loss supplement. Participants in this double-blind study are randomly assigned to either a group that receives the new supplement or a group that receives a placebo. Participants are weighed before starting the program. After 6 weeks of taking either the new supplement or the placebo, participants return to the lab to be weighed.

Provide the appropriate null and alternative hypotheses.
Determine which type of analysis would be appropriate to answer this research question. Be specific and support your answer using the textbook or other course materials.
Name the independent and dependent variables used in the analysis. What are the levels of the independent variable?
Indicate the levels of measurement for each variable.
Describe the Type I error for this study.
Describe the Type II error for this study.

We are purchasing a new TV!

Let A be the event that the TV was manufactured in the U.S., B be the event that the TV has Wifi, and C the event that the customer purchased an extended warranty.

Relevant probabilities are:

P(A) = 0.75

P(B|A) = 0.9

P(B|A′) = 0.8

P(C|A ∩ B) = 0.8

P(C|A ∩ B′) = 0.6

P(C|A′ ∩ B) = 0.7

P(C|A′ ∩ B′) = 0.3

a. What is the probability that the TV was manufactured in the US, with Wifi, and the customer purchased an extended warranty?

b. What is the probability that the TV does NOT have Wifi or the customer did NOT purchase an extended warranty?

c. What is the probability that the customer purchased an extended warranty?

d. What is the probability that the TV does NOT have Wifi given that it was not manufactured in the US?

Artificial Intelligence (AI) is not a new phenomenon, but it is still a growing concern for many industries. While the human element remains the most important factor in most businesses, the accounting industry is not exempt from the threat of new technologies. If you were the owner of a medium to a large company, how could you use new technologies such as AI to support your daily operations? Select and discuss one of the options below.

Option B: More accurate and efficient financial reporting (i.e. reduction in human errors, increased productivity)

A firm is considering an investment in a new machine with a price of $18.06 million to replace its existing machine. The current machine has a book value of $6.06 million and a market value of $4.56 million. The new machine is expected to have a four-year life, and the old machine has four years left in which it can be used. If the firm replaces the old machine with the new machine, it expects to save $6.76 million in operating costs each year over the next four years. Both machines will have no salvage value in four years. If the firm purchases the new machine, it will also need an investment of $256,000 in net working capital. The required return on the investment is 11 percent and the tax rate is 35 percent.

What is the NPV of the decision to purchase a new machine? (Enter your answer in dollars, not millions of dollars. Do not round intermediate calculations and round your answer to 2 decimal places, e.g., 1,234,567.89.)
  
NPV           $

What is the IRR of the decision to purchase a new machine? (Do not round intermediate calculations. Enter your answer as a percent rounded to 2 decimal places, e.g., 32.16.)
  
IRR            %

What is the NPV of the decision to purchase the old machine? (A negative answer should be indicated by a minus sign. Enter your answer in dollars, not millions of dollars. Do not round intermediate calculations and round your answer to 2 decimal places, e.g., 1,234,567.89.)
  
NPV           $
  
What is the IRR of the decision to purchase the old machine? (Do not round intermediate calculations. Enter your answer as a percent rounded to 2 decimal places, e.g., 32.16. A negative answer should be indicated by a minus sign.)
  
IRR            %

The selling price of a new car is normally distributed with an average of $20880 and a variance of $12180100.00.

a) What proportion of new cars will sell for less than $21600?
probability =

b) Assuming a normal distribution, within what selling prices will the middle 88% fall?
lower = , upper =

Note: Do NOT input probability responses as percentages; e.g., do NOT input 0.9194 as 91.94.

You are an engineer in charge of designing a new generation of elevators for a prospective upgrade to the Empire State Building. Before the state legislature votes on funding for the project, they would like you to prepare a report on the benefits of upgrading the elevators. One of the numbers that they have requested is the time it will take the elevator to go from the ground floor to the 102nd floor observatory. They are unlikely to approve the project unless the new elevators make the trip much faster than the old elevators.

If state law mandates that elevators cannot accelerate more than 4.50 m/s24.50 m/s2 or travel faster than 15.3 m/s15.3 m/s, what is the minimum time in which an elevator can travel the 373373 m from the ground floor to the observatory floor?

If a company’s cost of capital is 8.5 % and by implementing a new software systems they can save 420,000.00 per year for three years and then the software will be obsolete. The initial cost is 401,231.00 this amount includes 200,000 in working capital, and their tax rate is 38%.

19. The NPV is between: A. 500,000 & 700,000 C. 750,000& 900,000 E.1,000,000 & 1,200,000 B. 350,000 & 500,000 D. 10,000 & 49,000

20. The NPV is between : A. 500,000 & 700,000 C. 750,000 & 900,000 E. 1,000,000 & 1,200,000 B. 350,000 & 500,000 D. 10,000 & 49,000

21. The company holds all the risk in Firm commitment underwriting. A. True B. False

22. The market risk premium always stays the same. A. True B. False

23. In the constant dividend growth model D1 represents A. The last dividend paid B. The growth rate of dividends C. The price plus the dividend D. The average dividend E. None of the above