What is the approximate 95 percent prediction interval

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In a cross-sectional study of sales in different cities, the following relationship between sales revenue (S = sales revenue in dollars) and city size as measured by population (POP = population in thousands) was estimated: S = 37.02 + 0.6734(POP). What is the approximate 95 percent prediction interval for sales in a city of 155,000 people when the regression standard error is 32.7214? (Note: you should use a rule of thumb here)

Reference no: EM132854946

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