Statistic Chpt8 2

Suppose that a train conductor claims that the variance of the time required to go from Point A to Point B is 133 minutes. 60 train rides between Point A and Point B last month were reviewed at random. For those 60 rides, the variance of the times required to go from Point A to Point B was 150 minutes. At a significance level of .05, is there enough information to reject the train conductor’s claim?

 

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