7. [3/8 Points] DETAILS BBUNDERSTAT12 8.4.009.MI.S. MY NOTES ASK YOUR TEACHER In this problem, assume that the distribution of differences is approximately normal. Note: For degrees of freedom d.f. not in the Student's t table, use the closest d.f. that is smaller. In some situations, this choice of d.f. may increase the P-value by a small amount and therefore produce a slightly more "conservative" answer. Are America's top chief executive officers (CEOs) really worth all that money? One way to answer this question is to look at row B, the annual company percentage increase in revenue, versus row A, the CEO's annual percentage salary increase in that same company. Suppose a random sample of companies yielded the following data: B: Percent increase 24 25 27 18 6 4 21 37 for company A: Percent increase 25 23 22 14 -4 for CEO 15 30 LO USE SALT Do these data indicate that the population mean percentage increase in corporate revenue (row B) is different from the population mean percentage increase in CEO salary? Use a 5% level of significance. (Let d = B - A.) (a) What is the level of significance? .05 State the null and alternate hypotheses. OH: Mg > 0; H1: Ud = 0 OH: H = 0; H: ud o XSketch the sampling distribution and show the area corresponding to the Pvalue