Assume that Friday morning taxi-cab rides have times with a standard deviation of a = 10.1 minutes. A cab driver records times of rides during a Friday afternoon time period and obtains these statistics: n = 14, x=19.8 minutes, s = 12.6 minutes. Use a 0.10 significance level to test the claim that these Friday afternoon times have greater variation than the Friday morning times. Assume that the sample is a simple random sample selected from a normally distributed population.

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