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A psychopathologist records the number of criminal offenses among teenage drug users in a nationwide sample of1,301participants. To measure the variance of criminal offenses, he

A psychopathologist records the number of criminal offenses among teenage drug users in a nationwide sample of1,301participants. To measure the variance of criminal offenses, he computesSS=32,500for this sample.

(a) What are the degrees of freedom for variance?

(b) Compute the variance and standard deviation.

variance=

standard deviation=

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