The residents of a housing development for senior citizens have completed a survey on which they indicated how physically active they are and how many visitors they receive each week. Are these two variables related for the 10 cases reported on the following table? Draw a scattergram and compute r and r2. Find the least-squares regression line. What would be the predicted number of visitors for a person whose level of activity was a 5? How about a person who scored 18 on level of activity?
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