In a psychology journal, researchers reported that a chief executive officer's facial structure can be used to predict a firm's financial performance. The study involved measuring the facial width-to-height ratio (WHR) for each in a sample of 40 CEOs at publicly traded Fortune 500 firms. These WHR values determined by computer anah zing a photo of the CEO's face had a mean of x= 1.96 and a standard deviation of s= 0.17.

Find and interpret a 90% confidence interval for ?, the mean facial WHR for all CEOs at publicly traded Fortune 500 firms (Round to three decimal places as needed.)

If a bond is issued at a premium the effective interest rate is most likely

Alarge university wanted to study the relationship between completing an internship during college and students' future earning potential. prom the same graduating class, they selected a random sample of 80 students who completed an internship and 100 students who did not complete an internship and examined their salaries five years after graduation. they found that there was a statistically higher mean salary for the internship group than for the noninternship group. which of the following interpretations is the most appropriate? a. there could be a confounding variable, such as student major, that explains the difference in mean salary between the internship and no internship groups.b. we cannot infer anything from these data since the distribution of salaries is likely right skewed.c. you cannot draw any valid conclusions because the sample sizes are different.d. more students should complete internships because having an internship produces a higher salary.

Ski powder resort ends its fiscal year on april 30. the business adjusts its accounts monthly, but closes them only at year-end (april 30). the resort's busy season is from december 1 through march 31. adrian pride, the resort's chief financial officer, the museums a close watch on lift ticket revenue and cash. the balances of these accounts at the end of each of the last five months are as follows: