Question: 22 students indicated the difference in their Exam 1 score - Exam 2 score This data was to be used to test the null hypothesis

22 students indicated the difference in their Exam 1 score - Exam 2 score

This data was to be used to test the null hypothesis that the average difference per student in their Exam 1 scores - Exam 2 scores was 15 as it was in the past versus the alternative that the difference was greater than 15 points.

Overall, the sample average difference was 14.54545 points with a sample standard deviation of 24.67558 points.

What is the standard error of the mean in this situation?Show your computations.

Find the z-score for the test statistic and then the P-value.

Show your computations for the Z score and explain how you found the p-value. What do you conclude?

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