Please help! It would be greatly appreciated! Assume that a researcher wants to

Question

Please help! It would be greatly appreciated!

Assume that a researcher wants to use sample data to test the claim that the sample is from a population with a standard deviation less than 1.8 min The researcher will use a 0.05 significance level to test that claim. If the researcher wants to use the confidence interval method of testing hypotheses, what level of confidence should be used for the confidence interval? Will the conclusion based on the confidence interval be the same as the conclusion based on a hypothesis test that uses the P-value method or the critical value method? If the researcher wants to use the confidence interval method of testing hypotheses, what level of confidence should be used for the confidence interval? 0 A. Since this is a one-tailed test, the researcher should us a confidence level of 0.95 O B. Since this is a two-tailed test, the researcher should use a confidence level of 0.95. OC. Since this is a one-tailed test the researcher should use a confidence level of 0.90

Explanation / Answer

1)

option C:since this is a one tailed test ..use a confidence level of 0.90

2)

option B is correct

( please revert for part 2 ; as in rare cases option C is correct)

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