A,b,c,d

#1 A production filling operation has a historical standard deviation of 5.5 ounces. A quality control inspector periodically selects 36 containers at random and uses the sample mean filling weight for the production process. If a sample mean is 48.6 ounces, a) Calculate the Error Bound Margin (EBM) for the population mean filling weight for the production process at 99% confidence level b) Construct the 99% confidence interval estimate for the population mean filling weight for the production process c) If you desire to keep your EBM to 2 units instead of the answer you obtain in (a) above, determine the minimum number of containers needed to achieve the desired EBM d) What would be the effect on the confidence interval if 70% confidence level was desired compared to the 99% used in (b) above? And Why