c. Sample 1 mean of 1,500, s.d. of 550, n of 1,200; sample 2 mean of 1,250, s.d. of 500,
n of 500, level of 95%
There is a statistically significant difference.
12. Demonstrate your understanding of your work in question 11, by drawing the sampling
distributions of each case—a, b, and c—in the format presented in Figure 13.1.
13. A researcher is investigating different types of customers for a sporting goods store. In a
survey, respondents have indicated how much they exercise in approximate minutes per
week. These respondents have also rated the performance of the sporting goods store across
twelve difference characteristics such as good value for the price, convenience of location,
and helpfulness of the sales clerks. The researcher used a 7-point rating scale for these
twelve characteristics where 1 = poor performance and 7 = excellent performance. How can
the researcher investigate differences in the ratings based on the amount of exercise reported
by the respondents?
There are three groups based on their weekly exercise time range, for example there could be
14. A shoe manufacturer suspects there are six market segments that it can use effectively in its
target marketing: toddlers, middle-school children, high school students, young and active