Use the given data set to answer parts (a) and (b). a. Find the regression equation for the data points. b. Graph the regression equation and the data points. y -1 x 51 2 44 3 -1 4 28 Ď

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A: μ = 2 inches n = 100 X = 2.1 inches σ = 0.2 inches Formula Used: Test-statistic Z = X-μσn