You randomly sample mice from the a colony of mice. For a sample of size 20, the sample mean weight is 3.6 grams. You know the colony population standard deviation in weight is 0.5 grams. Find the 95% confidence interval for the population mean. Set up the equation, solve to an upper and lower limit and write out the correct confidence interval statement. Assume the population is normally distributed and the critical z value you will need is 1.96