Chapter 9 Case Study: Clothing Store Sales.
The business research questions in Exercises 31–35 pertain to our Chapter 9 Case Study, Clothing Store Sales.
Question 9.35
35. Days Since Purchase. The marketing manager wants to make sure that the mean number of days since purchase is less than 150.
9.1.35
(a) (b) Concluding that the population mean number of days since purchase is less than 150 when, in reality, it is less than 150. Concluding that the population mean number of days since purchase is equal to 150 when, in reality, it is equal to 150. (c) Concluding that the population mean number of days since purchase is less than 150 when, in reality, it is equal to 150. (d) Concluding that the population mean number of days since purchase is equal to 150 when, in reality, it is less than 150.