To test Upper H0â€‹: Î¼=20 versus Upper H1â€‹: Î¼< 20, a simple random sample of size n =17 is obtained from a population that is known to be normally distributed. Answer partsâ€‹ (a)-(d).
Please look at the t-Distribution Area in Right Tail table that I attached to this question.
(a) If xÌ… = 18.2 and s = 4.3, compute the test statistic.
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t = __
â€‹(Round to two decimal places asâ€‹ needed.)
(b) Draw aâ€‹ t-distribution with the area that represents theâ€‹ P-value shaded.
â€‹Approximate theâ€‹ P-value. Choose the correct range for theâ€‹ P-value below.
level ofâ€‹ significance, will the researcher reject the nullâ€‹ hypothesis?
The researcher will reject the null hypothesis since the
â€‹ P-value is not less than
The researcher will not reject the null hypothesis since the
â€‹ P-value is less than
The researcher will reject the null hypothesis since the P-value is less than
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