Chapter 9.3, Problem 6Q

The bitter, eight-month baseball strike that ended the 1994 season so abruptly was expected to have substantial repercussions at the box office when the 1995 season finally got under way. It did. By the end of the first week of play, American League teams were playing to 12.8% fewer fans than the year before; National League teams fared even worse–their attendance was down 15.1% $\left(201\right)$. Based on the team-by-team attendance figures given below, would it be appropriate to use the pooled two-sample $t$ test of Theorem 9.2.2 to assess the statistical significance of the difference between those two means?

American League		National League
Team	Change	Team	Change
Baltimore	–2%	Atlanta	–49%
Boston	+16	Chicago	–4
California	+7	Cincinnati	–18
Chicago	–27	Colorado	–27
Cleveland	No home games	Florida	–15
Detroit	–22	Houston	–16
Kansas City	–20	Los Angeles	–10
Milwaukee	–30	Montreal	–1
Minnesota	–8	New York	+34
New York	–2	Philadelphia	–9
Oakland	No home games	Pittsburgh	–28
Seattle	–3	San Diego	–10
Texas	–39	San Francisco	–45
Toronto	–24	St. Louis	–14
Average:	–12.8%	Average:	–15.1%