Can someone help me on this please?

Consider the following set of random measurements, taken from a normally distributed population before and after a treatment was applied. Before Treatment [5464, 54.62, 55.94, 52.76, 54.04, 58.59, 50.02, 59.11, 56.17] [After Treatment [55.75, 58.49, 64.41, 58.79, 56.93, 60.74, 59.46, 63.86, 64.52] Difference [1.11, -3.s7, 43.47, 43.03, -2.89, -2.15, -9.44, 4.75, 43.35] a) Determine the point estimate for the mean difference. Round your response to at least 3 decimal places. b) Calculate the standard error of the sample mean difference. Round your response to at least 3 decimal places. c) What is the margin of error for a 95% confidence interval for the mean difference? Round your response to at least 3 decimal places