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Question
If the sample standard deviation is 10.5 and the sample mean is 48 based on a study with a sample size of 120, the 95 percent confidence interval about the mean is between approximately _____.a. 44.37 and 51.63
b. 46.12 and 49.88
c. 47.88 and 48.12
d. 40.0 and 50.0
Answer
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