7.62 When is 52 weeks not equal to a year? Refer to the previous exercise. The researchers also had 60 marketing students read an announcement about a construction project. The expected duration was either one year or 52 weeks. Each student was then asked to state the earliest and latest completion date.

Test that the average interval is the same for the two groups using the significance level. Report the test statistic, the degrees of freedom, and the P-value. Give a short summary of your conclusion.