Question 7.93

7.93 Ego strength: power.

You want to compare the ego strengths of MBA students who plan to seek work at consulting firms and those who favor manufacturing firms. Based on the data from Exercise 7.63 (page 396), you will use for planning purposes. The pooled two-sample test with will be used to make the comparison. You judge a difference of 0.5 point to be of interest.

  1. Find the power for the design with 20 MBA students in each group.
  2. The power in part (a) is not acceptable. Redo the calculations for 30 students in each group and .

7.93

(a) 0.3121. (b) 0.7794. Answers may vary if using software.