> G learn-us-east-1-prod-fleet02-xythos.content.blackboardcdn.com C + 88 Bb Discussion Board - MAT... B https://learn-us-east-1-p... B https://learn-us-east-1-p... B https://learn-us-east-1-p... Tuition and Expenses | M... Undergraduate Tuition F... Course Hero Question #2: If, for question #1, Sammy takes out a sample of 64 and he records the average of this sample to be 20 and he knows the population standard deviation to be 12.5, construct a confidence interval for the following confidence intervals to estimate the population mean "u". a.)90% confidence interval b.)95% confidence interval c.) 99% confidence interval d.) If want our margin of error for part c to for 99% confidence to be only 1, then what sample size should we have