# Question: A simple random sample of 40 items resulted in a

A simple random sample of 40 items resulted in a sample mean of 25. The population standard deviation is σ = 5.

a. What is the standard error of the mean, σx?

b. At 95% confidence, what is the margin of error?

a. What is the standard error of the mean, σx?

b. At 95% confidence, what is the margin of error?

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