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the length of major league baseball games is approximately normally distributed and average is 2 hours...

the length of major league baseball games is approximately normally distributed and average is 2 hours and 50.1 minutes, with a standard deviation of 21.0 minutes. It has been claimed that new york yankees baseball games last, on average, longer than the games of the other major league teams. To test the truth of the statement, a sample of 8 yankee games was randomly identified and had a mean length of 190 minutes. Do these data shows sufficient evidence to conclude that the mean time of yankees baseball games is longer than that of other major league baseball teams? Use a=0.05. conduct a hypothesis test using the p value approach.

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