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A study of 203 police officers in an eastern state found that their mean salary was $75,500 with a sample standaro deviation of $3,000. The

A study of 203 police officers in an eastern state found that their mean salary was $75,500 with a sample standaro deviation of $3,000. The same study of 245 police officers in a northern state found that their mean salary was $74,500 with a sample standard deviation of $4,000. Let group 1 be the eastern state police officers and group 2 be the northern state police officers.

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