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A college claims that commute times to the school have a mean of 60 minutes with...

A college claims that commute times to the school have a mean of 60 minutes with a standard deviation of 12 minutes.  Assume that student commute times at this college are normally distributed.  A statistics student believes that the variation in student commute times is greater than 12 minutes.  To test this a sample of 71 students in chosen and it is found that their mean commute time is 58 minutes with a standard deviation of 14.5 minutes.

At the 0.05 level of significance, test the claim that the variation in commute times for students at this college is greater than 12 minutes.

Math   Statistics-And-Probability   
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