The heights of high school students in Kitchener are normally distributed with mean (mu) and standard deviation of 10 cm. A sample of size 40 is taken and the mean height of the sample is found to be 162 cm. a) Find the 95% confidence interval of the mean height of the students. SHOW all steps. b) Draw a graph to display your confidence level including the sample mean and the lower and upper boundaries for the 95% confidence interval c) What is your conclusion or interpretation