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Suppose the mean salary for full professors in the United States is believed to be $61,650. A sample of 36 full professors revealed a mean

Suppose the mean salary for full professors in the United States is believed to be $61,650. A sample of 36 full professors revealed a mean salary of $69,800. Assuming the standard deviation is $5,000, can it be concluded that the average salary has increased using a 1% level of significance?

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