A Researcher Estimates the 95% CI for a Sample with a Mean

question 18

Multiple Choice

A researcher estimates the 95% CI for a sample with a mean of M = 9.0 and a standard error ( $\sigma$ _M) of 1.03.What is the confidence interval at this level of confidence?

• A) 95% CI 7.3, 10.7
• B) 95% CI 8.0, 10.0
• C) 95% CI 7.0, 11.0
• D) There is not enough information to answer this question.

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