To construct a condence interval for the difference between two population means [.11 - p2. use the formula shown below when both population standard deviations are known. and either both populations are normally distributed or both n1 230 and n2 2 30. Also, the samples must be randomly selected and independent. The descriptive statistics for the annual salaries from a random sample of microbiologists from two regions are shown below. Construct a 95% condence interval for the difference between the mean annual salaries. i1= 510mm. n1 =40. and o1=$3995;2 435.530. n2 = 43. and 52 = soars Complete the 95% condence interval for '11 p2 below. 5 \" P1 ' H2 \" 5 (Round to the nearest dollar as needed.)