Tall Buildings The stories and heights (in feet) of a sample of 10 buildings in Pittsburgh are shown. Stories x 40 34 34 32 30 30 23 27 23 25 Height y 685 675 645 630 624 610 561 558 555 547 Send data to Excel The correlation coefficient for the data is r= 0.947 and a = 0.05. Should regression analysis be done? O The regression analysis should not be done. O The regression analysis should be done. Find the equation of the regression line. Round the coefficients to at least three decimal places. y' = a+bx a. Find y' when x = 28. Round your answer to at least three decimal places. y'

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