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

Question

Test the claim that for the population of statistics final exams, the mean score is 73 using alternative hypothesis that the mean score is different from 73. Sample statistics include n = 26, x = 74, and s = 19. Use a significance level of alpha = 0.01. (Assume normally distributed population.) The test statistic is The positive critical value is The negative critical value is The conclusion is There is sufficient evidence to reject the claim that the mean score is equal to 73 There is not sufficient evidence to reject the claim that the mean score is equal to 73.

Explanation / Answer

here std error =std deviation/(n)1/2 =19/(26)1/2=3.726

hence test stat =(X-mean)/std error =0.2684

+ve critical value =2.7874

-ve critical value =-2.7874

conclusion

option B is correct

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