Suppose that n 18data points were used to construct the given regression equation and that the standard error for the coefficient of x 4 is0 833 Construct a 90 confidence interval for the coefficient of x 4 (Round your answers to two decimal places ) lower limit upper limit Using the information of part (e) and level of significance10 , test the claim that the coefficient of x 4 is different from zero (Round your answers to two decimal places ) t t critical

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Question: Suppose that n =18data points were used to construct the given regression equation and that the standard error for the coefficient of x 4 is0.833.

Suppose thatn=18data points were used to construct the given regression equation and that the standard error for the coefficient ofx₄is0.833. Construct a 90% confidence interval for the coefficient ofx₄. (Round your answers to two decimal places.)

lower limit

upper limit

Using the information of part (e) and level of significance10%, test the claim that the coefficient ofx₄is different from zero. (Round your answers to two decimal places.)

tcritical=

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