Find the Requested Confidence Interval $10 : 30$ AM Daily a Sample of Waiting Times to See the Professor

question 36

Multiple Choice

Find the requested confidence interval.
-A college statistics professor has office hours from 9:00 A.M. to $10 : 30$ A.M. daily. A sample of waiting times to see the professor (in minutes) is $10,12,20,15,17,10,30,28,35,28,19,27,25,22,33$ , $37,14,21,20,23$ . Assuming $\sigma = 7.84$ , find the $99.74 \%$ confidence interval for the population mean.

• A)\(18.8\) to \(25.8\) minutes
• B) \(19.5\) to \(35.1\) minutes
• C) \(17.05\) to \(27.55\) minutes
• D) \(20.55\) to \(24.05\) minutes

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