[EX08-153] The length of major league baseball games are approximately normally distributed and average 2 hours and 50.1 minutes, with a standard deviation of 21.0 minutes. It has been claimed that New York Yankee baseball games last, on the average, longer than the games of the other major league teams. To test the truth of this statement, a sample of eight Yankee games was randomly identified and the “time of game” (in minutes)

for each obtained:

199 196 202 213 187 169 169 188 Source: MLB.com At the 0.05 level of significance, does this data show sufficient evidence to conclude that the mean time of Yankee baseball games is longer than that of other major league baseball teams?