In problem 12.9 on page 446, an agent for a real estate
company wanted to predict the monthly rent for one-bedroom apartments, based on
the size of the apartment. The data are stored in rentSilverSpring. Use the
results of that problem.
a. At the 0.05 level of significance, is there evidence of a
linear relationship between the size of the apartment and the monthly rent?
b. Construct a 95% confidence interval estimate of the
population slope, _1.
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