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Question
Regression analysis.
A local grocery store wants to predict its daily sales in dollars. The manager believes that the amount of newspaper advertising significantly affects sales. He randomly selects 7 days of data consisting of daily grocery store sales (in thousands of dollars) and advertising expenditures (in thousands of dollars). The Excel/MegaStat output given above summarizes the results of the regression model.
Determine a 95 percent confidence interval estimate of the daily average store sales based on $3,000 advertising expenditures. The distance value for this particular prediction is reported as .164.
Answer
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