Asked by Amy

Assuming the population has an approximate normal distribution, if a sample size n = 17 has a sample mean x = 47 with a sample standard deviation s = 3 , find the margin of error at a 98 % confidence level. Round the answer to two decimal places.

Please help
Answered by oobleck
You can play around with Z table stuff at
http://davidmlane.com/hyperstat/z_table.html
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