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Regression Coefficient Tests and Confidence Intervals

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Please answer the following questions:

(a) Explain why a confidence interval for the slope or intercept would be equivalent to a two-tailed hypothesis test.

(b) Why is it especially important to test for a zero slope?

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This 400 word solutions explains why a confidence interval for a ...

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This 400 word solution explains why a confidence interval for a regression coefficient is equivalent to a two taild hypothesis test for the coefficient and why it is especially important to test for a zero slope.

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