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 5 with a mean of 85.5 and a standard deviation of 9.1 at a confidence level of 99.5%.

Report ME accurately 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.