Which of the following statements is (are) true regarding 1-tailed and 2-tailed
ID: 3130740 • Letter: W
Question
Which of the following statements is (are) true regarding 1-tailed and 2-tailed hypothesis tests? Check all that apply.
Note: Consider this carefully. There may be more than one correct answer and there is no partial credit for getting only one selection correct. Also note that, when considering a 1-tailed test, assume that we are excluding the possibility of getting a test statistic in the 'wrong' tail, i.e. the tail which does not contain the critical value.
Rejecting a 1 tailed test implies that you would fail to reject the corresponding 2 tailed test at the same level
Rejecting a 1-tailed test implies that you would also reject the corresponding 2-tailed test at the same significance level
Failing to reject a 2-tailed test implies that you would also fail to reject the corresponding 1-tailed test at the same significance level
Rejecting a 2-tailed test implies that you would also reject the corresponding 1-tailed test at the same significance level
Failing to reject a 2-tailed test means that you will reject the corresponding single tailed test at the same level
Failing to reject a 1-tailed test implies that you would fail to reject the corresponding 2-tailed test at the same alpha level
Explanation / Answer
P-value of the two tailed test is greater than p-value of one tailed test. And we will reject the null hypothesis when p-value is less than level. If p-value of one tailed test is less than , it is not necessary that p-value of two tailed will be greater than .
Cannot conclude that "Rejecting a 1 tailed test implies that you would fail to reject the corresponding 2 tailed test at the same level".
Cannot conclude that "Rejecting a 1-tailed test implies that you would also reject the corresponding 2-tailed test at the same significance level"
Cannot conclude that "Failing to reject a 2-tailed test implies that you would also fail to reject the corresponding 1-tailed test at the same significance level"
Cannot conclude that "Failing to reject a 2-tailed test means that you will reject the corresponding single tailed test at the same level"
Correct options:
Rejecting a 2-tailed test implies that you would also reject the corresponding 1-tailed test at the same significance level.
Failing to reject a 1-tailed test implies that you would fail to reject the corresponding 2-tailed test at the same alpha level.
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