Refer to the Journal of the American Law and Economics Association (Vol. 3, 2001) study of appeals of federal civil trials, presented in Exercise. A breakdown of 678 civil cases that were originally tried in front of a judge and appealed by either the plaintiff or the defendant is reproduced in the accompanying table. Do the data provide sufficient evidence to indicate that the percentage of civil cases appealed that are actually reversed is less than 25%?
Test, using a = .01.
Outcome of Appeal Number of Cases
Plaintiff trial win—reversed........ 71
Plaintiff trial win—affirmed/dismissed... 240
Defendant trial win—reversed........ 68
Defendant trial win—affirmed/dismissed.... 299
Total ................. 678

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