A random sample of 80 tempe city employees average 13.1, Ask an Expert

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Hypothesis testing for difference between two population means.

A random sample of 80 Tempe city employees average 13.1 years of education. A random sample of 75 Mesa city employees average 13.30 years of education. Which test must we use to determine whether the difference between Mesa and Tempe is statistically significant and Why? Should it be one or two-tailed?

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