Suppose you fit the first-order multiple-regression model y = 0 + 1x1 + 2x2 + to

Question:

Suppose you fit the first-order multiple-regression model

y = β0 + β1x1 + β2x2 + ε

to n = 25 data points and obtain the prediction equation

y = 6.4 + 3.1x1 + .92x2

The estimated standard deviations of the sampling distributions of β1 and β2 are 2.3 and .27, respectively.

a. Test H0: β1 = 0 against Ha: β1 > 0. Use α = .05.

b. Test H0: β2 = 0 against Ha: β2 ≠ 0. Use α = .05.

c. Find a 90% confidence interval for β1. Interpret the interval.

d. Find a 99% confidence interval for β2. Interpret the interval.

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Statistics

ISBN: 9780321755933

12th Edition

Authors: James T. McClave, Terry T Sincich

Question Posted: May 20, 2015 07:45 AM

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Suppose you fit the first-order multiple-regression model y = 0 + 1x1 + 2x2 + to

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a We are given 31 23 and n 25 H 0 1 0 H a 1 0 The test statistic is The rejection region requires 05 ...View the full answer

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