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8. To determine the significance of a coefficient in a classical linear model at the 5% significance level, which of the following statements is correct? a) Use a t test, and one should reject the null if the P-value is less than 0.05. b) Use a t test, and one should reject the null if the P-value is less than 0.5. c) Reject H, if the 95% confidence interval contains zero. d) Both a) and c) are correct.

8. To determine the significance of a coefficient in a classical linear model at the 5% significance level, which of the following statements is correct? a) Use a t test, and one should reject the null if the P-value is less than 0.05. b) Use a t test, and one should reject the null if the P-value is less than 0.5. c) Reject H, if the 95% confidence interval contains zero. d) Both a) and c) are correct.

Calculus For The Life Sciences
Calculus For The Life Sciences
2nd Edition
ISBN:9780321964038
Author:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Publisher:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Chapter13: Probability And Calculus
Section13.CR: Chapter 13 Review
Problem 6CR
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8. To determine the significance of a coefficient in a classical linear model at the 5% significance level, which of the following statements is correct? a) Use a t test, and one should reject the null if the P-value is less than 0.05. b) Use at test, and one should reject the null if the P-value is less than 0.5. c) Reject Ho if the 95% confidence interval contains zero. d) Both a) and c) are correct.
Transcribed Image Text:8. To determine the significance of a coefficient in a classical linear model at the 5% significance level, which of the following statements is correct? a) Use a t test, and one should reject the null if the P-value is less than 0.05. b) Use at test, and one should reject the null if the P-value is less than 0.5. c) Reject Ho if the 95% confidence interval contains zero. d) Both a) and c) are correct.
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