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in a random sample of 9 days in January, the standard deviation in high temperatures was...

in a random sample of 9 days in January, the standard deviation in high temperatures was 7.1 degrees, in a random sample of 12 days in February, the standard deviation in high temperatures was 3.2 degrees. conduct a hypothesis test to determine if there is a difference in variances for the two months. let the confidence level =0.01. use the traditional method

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