In this problem, assume that the distribution of differences Is approximately normal. Note: For degrees of freedom df. 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 Pvalue 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 5, 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: 5: Percent Increase 26 23 25 18 4 21 37 for man! A Percent lncrelee for CEO 23 23 22 14 4 19 15 30 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 signicance. (Let d = B A.) (a) What is the level of signicance? State the null and alternate hypotheses. O Ho: \"11* 0; H1:,ud= 0 O H:].ld=O;H1:].ld>O O Hozud>0;H1:ud=0 O Hozud=0;H1:ud 0.500 O 0.250 a, we reject Ho. The data are not statistically significant. Since the P-value > a, we fail to reject Ho. The data are not statistically significant. Since the P-value s a, we reject Ho. The data are statistically significant. (e) Interpret your conclusion in the context of the application. O Fail to reject Ho. At the 5% level of significance, the evidence is insufficient to claim a difference in population mean percentage increases for corporate revenue and CEO salary. O Reject Ho. At the 5% level of significance, the evidence is insufficient to claim a difference in population mean percentage increases for corporate revenue and CEO salary. O Fail to reject Ho. At the 5% level of significance, the evidence is sufficient to claim a difference in population mean percentage increases for corporate revenue and CEO salary. O Reject Ho. At the 5% level of significance, the evidence is sufficient to claim a difference in population mean percentage increases for corporate revenue and CEO salary