Want to attend a pro-basketball finals game? The average prices for the NBA rematch of the Boston Celtics and the LA Lakers in 2010 compared to the average ticket prices in 2008 are given in the table that follows.

a. If we were to assume that the prices given in the table have been randomly selected, test for a significant difference between the 2008 and 2010 prices. Use α = .01.
b. Find a 98% confidence interval for the mean difference, µd = µ08 - µ10. Does this estimate confirm the results of part a?

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2010 (S) 532 855 541 458 621 681 890 Game 2008 (S) 593 907 769 753 2