The following data comparing GPAs based on seating position is provided: ROUND TO FOUR DECIMAL PLACES Position Front of Room Back of Room Sample Size 52 47 Average GPA 3.24 2.97 Population Standard Deviation .57 .49 a. What is the 98% confidence interval for the difference in GPAsbetween people who sit in the front of the room and the back of the room? b. What is the test statistic for testing to see if there is a significant difference in GPAs between front of the room or back of the room seating?

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