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Test the claim that for the population of statistics final exams, the mean score is 79...

Test the claim that for the population of statistics final exams, the mean score is 79 using alternative hypothesis that the mean score is different from 79. Sample statistics include ?=19, x ¯ = 80 , and ?=14. Use a significance level of ?=0.01. (Assume normally distributed population.) The test statistic is

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Answer #1

SOLUTION:

USING Test statistic FORMULA

Test statistic = t

= ( - ) / S / n

= (80 -79) / 14 / 19

Test statistic = 0.31

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