Find the Confidence Interval Specified $\sigma = 14.5$ Construct A Interval

question 26

Multiple Choice

Find the confidence interval specified.
-30 students were randomly selected from a large group of students taking a certain calculus test. The mean score for the students in the sample was 78. Assume that $\sigma = 14.5$ . Construct a $99 \%$ confidence interval for the mean score, $\mu$ , of all students taking the test.

• A)\(73.50\) to \(82.50\)
• B) \(71.21\) to \(84.79\)
• C) \(71.18\) to \(84.82\)
• D) \(71.48\) to \(84.52\)

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