Assume that a sample is used to estimate a population mean

. Find the margin of errorM.E.that corresponds to a sample of size 21 with a mean of 19.7 and a standard deviation of 19.9 at a confidence level of 99.8%.

Report ME accurate to one decimal place because the sample statistics are presented with this accuracy.

M.E.=

Answer should be obtained without any preliminary rounding. However, the critical value may be rounded to 3 decimal places.