To construct a confidence interval for the difference between two population means u - p2, 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. 109 02 02 ( *49 - X2) - Ze my m/2 n2 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. *, = $102,220, n, = 43, and c, = $9030; x2 = $85,160, my = 40, and a, = $9045 Complete the 95% confidence interval for Hy - pz below. $