Statistics Solutions

(See Steps) The Pittsburgh Police department claims that the standard deviation of the number of tickets they issue is 15 tickets. A police officer does

Question: The Pittsburgh Police department claims that the standard deviation of the number of tickets they issue is 15 tickets. A police officer does not agree, and randomly selects the records of 14 officers. He finds the sample standard deviation to be 13.43 tickets. Assuming that the data is normally distributed, test the department’s claim using = 0.01. Use the Chi-square test.

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