Historically, it has taken students an average of 80 minutes to finish the final exam. Suppose the average time a sample of 20 students takes to finish this year's final exam gave us a mean of 85 minutes and standard deviation of 15 . We see that a histogram of the data shows no signs of skewness and a BoxPlot shows no outliers. We want to run a hypothesis test to see if this year's exam is significantly longer than last year's. (use
a=0.05) -What would be the most appropriate test here to test the claim? My parameter of interest here would be:
◻The direction of test would be:
◻What is your resulting Test Statistic
◻Estimate of p-value
◻What is your resulting decision
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