Question

     Assume that a sample is used to estimate a population mean   μ   . Find the margin of error M.E. that corresponds to a sample of   size 18 with a mean of 28.9 and a standard deviation of 21.4 at a confidence   level of 99.5%.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