11. For a two-tail hypothesis test, the p-value is a sum of two tail areas a. Tr
ID: 1105777 • Letter: 1
Question
11. For a two-tail hypothesis test, the p-value is a sum of two tail areas a. True ___; b. False 12. When the population standard deviation is unknown we substitute the sample standard deviation, s, in place of and Use the Student's t-distribution for the test statistic rather than the normal distribution a. Trueb. False 13. (5 points) the average person in the U.S. watches 34.5 hours of television per week. Suppose Claim- viewing data is recorded for 20 people and the sample mean is found to be 38.6 hours and the sample standard deviation is 12.4 hours per week. At 0.02 (tan= 2.821) the Claim can be easily Rejected. True-_-; (SHOW WORK to get the full points) a. b. False 14. The power of the hypothesis test is the probability of it correctly rejecting the null hypothesis and the Power is calculated as a. 1-8 c. d. None of these at the same time) is to 15. The only way to lower the probability of both errors ( and B decrease the sample size a. Trueb. FalseExplanation / Answer
First question is answered below
11.
Correct answer: FALSE
Reason: p value is nothing but the estimated probability of rejecting the null hypothesis and is not equal to any sum of tail areas.
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