If the sample standard deviation is determined to be s = 2.5, compute the test statistic. = 23.244 (Round to three decimal places as needed.) If the researcher decides to test this hypothesis at the a = 0.05 level of significance, determine the critical value. = critical value is | (Round to three decimal places as needed.)

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To test Ho: 0 = 2.2 versus H1: o<2.2, a random sample of size n= 19 is obtained from a population that is known to be normally distributed.
(a) If the sample standard deviation is determined to be s = 2.5, compute the test statistic.
x = 23.244 (Round to three decimal places as needed.)
(b) If the researcher decides to test this hypothesis at the a = 0.05 level of significance, determine the critical value.
The critical value is
(Round to three decimal places as needed.)
Transcribed Image Text:To test Ho: 0 = 2.2 versus H1: o<2.2, a random sample of size n= 19 is obtained from a population that is known to be normally distributed. (a) If the sample standard deviation is determined to be s = 2.5, compute the test statistic. x = 23.244 (Round to three decimal places as needed.) (b) If the researcher decides to test this hypothesis at the a = 0.05 level of significance, determine the critical value. The critical value is (Round to three decimal places as needed.)
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