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Find the critical value(s) and rejection region(s) for the indicated t-test, level of significance $\alpha$, and sample size $n$.
Right-tailed test, $\alpha=0.10, n=21$
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The critical value(s) is/are 1.325
(Round to the nearest thousandth as needed. Use a comma to separate answers as needed.)
Determine the rejection region(s). Select the correct choice below and fill in the answer box(es) within your choice.
(Round to the nearest thousandth as needed.)
A. $t< \square$
C. $t< \square$ and $t> \square$
B. $t> \square$
D. $\square< t< \square$
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Answer
\(\boxed{t>1.325}\)
Step 1 ：The question is asking for the critical value and the rejection region for a right-tailed t-test with a level of significance of 0.10 and a sample size of 21.
Step 2 ：The critical value is given as 1.325. This is the value beyond which we would reject the null hypothesis in a right-tailed test.
Step 3 ：The rejection region for a right-tailed test is all values greater than the critical value.
Step 4 ：So, the rejection region for this test is all values greater than 1.325.
Step 5 ：\(\boxed{t>1.325}\)
