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Test the claim that for the population of statistics final exams, the mean score is 80...

Test the claim that for the population of statistics final exams, the mean score is 80 using alternative hypothesis that the mean score is different from 80. Sample statistics include n=28, x¯=81, and s=13. Use a significance level of α=0.05. (Assume normally distributed population.)

The test statistic is

The positive critical value is

The negative critical value is

The conclusion is A.There is sufficient evidence to reject the claim that the mean score is equal to 80.

B.There is not sufficient evidence to reject the claim that the mean score is equal to 80.

HypothesisTests

Math   Statistics-And-Probability   
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