The HR manager wonders if people are taking less vacation because they are working from home. Last year, staff averaged 7.3 hours of vacation per month. A random sample of 75 employees from the first six months of the year reveals an average of 6.8 hours of vacation per month with a sample standard deviation of 1.5 hours.

What is the hypothesis and null hypothesis?

What is the standard error and t score? Using the t distribution table, how likely is it that the number of vacation hours used is not less this year than last year? (0.10, 0.05, 0.025, 0.01, 0.005, 0.001, 0.0005)

Do you reject or accept the null hypothesis?