A simple random sample of 40 items resulted in a sample mean of 20. The population standard deviation is o = 3. Round your answers to two decimal places. a. What is the standard error of the mean, o? b. At 95% confidence, what is the margin of error?
A simple random sample of 40 items resulted in a sample mean of 20. The population standard deviation is o = 3. Round your answers to two decimal places. a. What is the standard error of the mean, o? b. At 95% confidence, what is the margin of error?
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.5: Comparing Sets Of Data
Problem 13PPS
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A simple random sample of 40 items resulted in a sample
a. What is the standard error of the mean, ?
b. At confidence, what is the margin of error?
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