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A Researcher Estimates the 90% CI for a Sample with a Mean

Question 54

Multiple Choice

A researcher estimates the 90% CI for a sample with a mean of M = 8.9 and a standard error ( A researcher estimates the 90% CI for a sample with a mean of M = 8.9 and a standard error ( ) of 2.1.What is the confidence interval at this level of confidence? A) 90% CI 4.8,13.0 B) 90% CI 5.5,12.4 C) 90% CI 6.8,11.0 D) There is not enough information to answer this question. ) of 2.1.What is the confidence interval at this level of confidence?


A) 90% CI 4.8,13.0
B) 90% CI 5.5,12.4
C) 90% CI 6.8,11.0
D) There is not enough information to answer this question.

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