Using techniques from Section 8.2, we can find a confidence interval for Î¼d. Consider a random sample

Question:

Using techniques from Section 8.2, we can find a confidence interval for Î¼d. Consider a random sample of n matched data pairs A, B. Let d = B - A be a random variable representing the difference between the values in a matched data pair. Compute the sample mean of the differences and the sample standard deviation sd. If d has a normal or is mound-shaped, or if n ‰¥ 30, then a confidence interval for Î¼d is
- E + E
where

c = confidence level (0 tc = critical value for confidence level c and d.f. = n - 1
(a) Using the data of problem 9, find a 95% confidence interval for the mean difference between percentage increase in company revenue and percentage increase in CEO salary.
(b) Use the confidence interval method of hypothesis testing outlined in problem 25 of Section 9.2 to test the hypothesis that the population mean percentage increase in company revenue is different from that of CEO salary. Use a 5% level of significance.

Using techniques from Section 8.2, we can find a confidence

Distribution
The word "distribution" has several meanings in the financial world, most of them pertaining to the payment of assets from a fund, account, or individual security to an investor or beneficiary. Retirement account distributions are among the most...