Managing for Quality and Performance Excellence 9th Edition by James Evans,William Lindsay

Exercise 79

Note: Data for many of the problems in this chapter can be found in the Excel workbook C08Data.xlsx on the Student Companion Site. Click on the appropriate worksheet tab as noted in the problem (e.g., Prob. 8-6, etc.) to access the data.
Determine, using Figure 8.50, the appropriate sample size for detecting:
a. A 1-sigma shift in the mean with a 0.80 probability.
b. A 2-sigma shift with 0.95 probability
c. A 2.5-sigma shift with 0.90 probability