Find confidence interval for mean salary of management major

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Reference no: EM13184549

A researcher is interested in estimating the salary of management majors. it is known that the population of salary offers is normally distributed with a standard deviation of 4(in thousands of dollars). the sample yields a sample mean of 50.

1. construct a 95% confidence interval for the mean salary of management majors?

2.interpret the confidence interval you found in a).

3. it the confidence interval still valid if the population of salary offers is not normally distrotion.

Reference no: EM13184549

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