State which type of parameter is to be estimated, and the correct method for the following. Do not solve. Part 1 of 3 (a) A simple random sample of size 11 has mean x = 3.94 and standard deviation s = 1.55. The population is approximately normally distributed. Construct a 98% confidence interval for the population mean. The parameter is the population mean X 5 The correct method to find the confidence interval is the method.Part 2 of 3 (b) A simple random sample of size 41 has mean x = 3.28. The population standard deviation is o = 1.51. Construct a 98% confidence interval for the population mean. The parameter is the population (Choose one) X 5 The correct method to find the confidence interval is the (Choose one) method