Instructions

Open the data file titled "MAT110TestData" and use it to complete the questions below. This file contains sample data for a group of 70 MAT 110 students. Each test was given in two forms, Form A and Form B. Completion times and scores earned are recorded for each of the 70 students. (Student names are fake to protect privacy, but the times and scores are real.)

For full credit, you must show all work including the hypotheses (label the claim), a sketch or description of the sampling distribution indicating the direction of the test, test statistic, and P-value. You must also state your decision, and separately, give an interpretation in the context of the original claim.

Problems

1.One student was upset with her grade on Test 2 and thought the test was too difficult. In her anger, she said, "There is no way the class average on this test was higher than a C." Can you conclude at a 0.05 level of significance that the average score on Test 2 was no higher than a 79?(18 pts)

2.If your decision for the hypothesis test you performed for Problem 1 was incorrect, what type of error would it be (Type I or Type II)? Explain what this error means in the context of this situation.