g A measure of species diversity is made for water samples taken from two independent locations. The first location was a sample of 12 measurements with a mean of 3.11 and standard deviation of 0.771. The second location was a sample of 10 measurements with a mean of 2.04 and a standard deviation of 0.448. Assume the measurements have normal distributions with a common variance. Find 95% confidence interval for the difference between species diversity in the two locations, µ1 - µ2.