=+46. Department store. A department store is planning its next advertising campaign. Since different publications are read by different market segments, they would like to know if they should be targeting specific age segments. The results of a marketing survey are summarized in the following table by Age and Shopping Frequency at their store.

Age Shopping Under 30 30–49 50 and Over Total Frequency Low 27 37 31 95 Moderate 48 91 93 232 High 23 51 73 147 Total 98 179 197 474