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Submit one excel file. Put each problem result on a separate sheet in your file. Please show all work/formulas in excel only!
10.45 A problem with a telephone line that prevents a customer from receiving or making calls is upsetting to both the customer and the telecommunications company. The file Phone contains communications company and the time to clear these problems (in minutes) from the customers' lines.
A. At the 0.05 level of significance, is there evidence of a difference in the variability of the time to clear problems between the two central offices?
b. Determine the p-value in (a) and interpret its meaning.
c. What assumption do you need to make in (a) about the two populations in order to justify your use of the F test?
d. Based on the results of (a) and (b), which t test should you use to compare the mean time to clear problems in the two central offices?
As a part of the editorial a random sample of 315 households showed 260 own pets. Does this data disagree with the Pet Food Dealers Association data? Use a 0.10 level of significance.
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Ski Resorts of Vermont, Inc. is considering a merger with Gulf Shores, Inc. of Alabama. The board of directors surveyed 50 stockholders concerning their position on the merger.
assume that the significance level is a0.01. use the given information to find the p-value and the critical values.
(a) What is the implied risk-free interest rate in this market? (b) What are the risk-neutral probabilities of each of the possible coin toss outcomes (heads, tails, edge)?
a study of the amount of time it takes a mechanic to rebuild the transmission for a 2005 chevrolet cavalier shows that
a simple computer game is designed as follows at the start of the game 5 identical icons are displayed on the screen
What are the mean value and standard deviation of the number of students who want new books? What is the probability that the number of students who want new books is more than two standard deviations above the mean?
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