a mean height between 62.5 blems 8 - 10. Assume that simple random samples from normal distributions are chosen. 8) The health of employees is monitored by periodically weighing them in. A sample of 60 employees has a mean weight of 182.4 lb. Assuming that o is known to be 121.2 lb, use a 0.05 significance level to test the claim that the population mean of all such employees weights is less than 200 lb. In addition construct a 90% confidence interval. 9) In