Please answer all 3

Use the sample information x = 40, o= 3, n= 18 to calculate the following confidence intervals for M assuming the sample is from a normal population. (a) 90 percent confidence. (Round your answers to 4 decimal places.) The 90% confidence interval is from ok (b) 95 percent confidence. (Round your answers to 4 decimal places.) nces The 95% confidence interval is from (c) 99 percent confidence. (Round your answers to 4 decimal places.) The 99% confidence interval is from