Question

Ques study reports that 31% of newly hired MBAs are confronted with unethical business practices during their first year of employment. One business school dean wondered her ME similar experiences. She surveyed recent graduates from her school's MBA program to find that 20% of the 111 grades from the previous year claim to have encountered unes ctices in the workplace. Can she conclude that her graduates' experiences are different? at are the null and alternative hypotheses? A. Ho: p=0.31 vs. Hy p<0.31 c. HP=0.21 vs. Hyp>0.31 E Hp0.26 vs HD +0.26 OB. HOP0.31 vs. Hp.031 OD. HAp+0.26 v Hp0.28 OF Hp 031 vs H D#031 at is the value of the best statistic? A. The assumptions and conditions are not met, so the test cannot proceed B. The test statistics (Round to two decimal places as needed klo select your answer

Answer 1

Option - F)

$H_{1}: p \neq 0.31$

The test statistic is

$z = \frac{\widehat p - p}{\sqrt{\frac{p(1 - p)}{n}}}$

0.26 -0.31 - 0.31(1-0.31) 111

P-value = 2 * P(Z < -1.14)

= 2 * 0.127

= 0.254

Since the P-value is greater than $\alpha$ , so we should not reject the null hypothesis.

Option - C) Fail to reject the null hypothesis. Ther is insufficient evidence that the rate of unethical business practice exposure is different from that reported.