SOLUTION: If, in a sample of n=25 selected from a normal populatin, X=53 and S=10, what are the critical values of t level of significance, a, is 0.01, the null hypothesis, Ho, is u=50, and

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Question 482894: If, in a sample of n=25 selected from a normal populatin, X=53 and S=10, what are the critical values of t level of significance, a, is 0.01, the null hypothesis, Ho, is u=50, and the alternative hypothesis, H1, is u not equal to 50?
Critical value of t are +/-:
round four decimal places.
Answer by stanbon(57214) About Me  (Show Source):
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If, in a sample of n=25 selected from a normal populatin, X=53 and S=10, what are the critical values of t level of significance, a, is 0.01, the null hypothesis, Ho, is u=50, and the alternative hypothesis, H1, is u not equal to 50?
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The H1 implies this is a 2-tail test.
So each tail has 0.005 of the t-values.
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InvT(0.005 when df = 24) = 2.7969
Critical value of t are +/-2.7969
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Cheers,
Stan H.