Assume that a sample is used to estimate a population mean . Find the margin of error M.E. that corresponds to a sample of size 19 with a mean of 42.9 and a standard deviation of 12.9 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.