A random sample of size 10 produced a sample mean equal to 12 and a standard deviation equal to .15. Based on this information, the margin of error associated with a 90% confidence interval estimate for the population mean is 1.8331.

Question

Quizplus · Accepted Answer

The formula for the margin of error for a 90% confidence interval is:
margin of error = 1.645 * (standard deviation/square root of sample size)
Using the given information:
margin of error = 1.645 * (.15/sqrt(10)) = 0.0812
Therefore, the statement that the margin of error is 1.8331 is false.

A Random Sample of Size 10 Produced a Sample Mean