An article presented data on compressive strength x and intrinsic permeability y of various concrete mixes and cures. Summary quantities are n = 14, yi = 572, E v} = 23530, x = 43, x? = 157.42, and xy, = 1697.80, Assume that the two %3D variables are related according to the simple linear regression model. Round your answers to 3 decimal places. (a) Test for significance of regression using a = 0.05. (b) Estimate o?2 i (c) In this model, what is the standard error of the intercept? i What is the standard error of the slope? i Statistical Tables and Charts

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