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The descriptive statistics for the annual salaries from a random sample of microbiologists from two regions are shown below. Construct a? 95% confidence interval for the difference between the mean annual salaries.

x1=?$104,070?,

n1=35?,

and

?1=?$9145?;

x2=?$85,550?,

n2=44?,

and

To construct a confidence interval for the difference between two population means 1 - H2, use the formula shown below when both population standard deviations are known, and either both populations are normally distributed or both n, 2 30 and n2 2 30. Also, the samples must be randomly selected and independent (* 1 - X2) - ZC my 02 n2