The Principal Randomly Selected Six Students to Take an Aptitude $$\begin{array} { l l l l l l } 71.6 & 81.0 & 88.9 & 80.4 & 78.1 & 72.0\end{array}$$

question 1

Multiple Choice

The principal randomly selected six students to take an aptitude test.Their scores were: $$\begin{array} { l l l l l l } 71.6 & 81.0 & 88.9 & 80.4 & 78.1 & 72.0\end{array}$$ Determine a 90% confidence interval for the mean score for all students.

• A)(73.26, 84.07)
• B)(84.07, 73.26)
• C)(83.97, 83.97)
• D)(73.36, 83.97)

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