The summary statistics for a certain set of points are: n = 30, se = 3.975, (x

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The summary statistics for a certain set of points are: n = 30, se = 3.975, ∑(x − x̄)2 = 15.425, and b1 = 1.212. Assume the conditions of the linear model hold. A 95% confidence interval for β1 will be constructed.

a. How many degrees of freedom are there for the critical value?

b. What is the critical value?

c. What is the margin of error?

d. Construct the 95% confidence interval.

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Elementary Statistics

ISBN: 9781259969454

3rd Edition

Authors: William Navidi, Barry Monk

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