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Answer to Question #1089 in Statistics and Probability for John

Question #1089
An LU professor is interested in whether there is a difference between undergraduate students and graduate students in the amount of time spent praying each day. The professor gathers information from random samples of undergraduate and graduate students on the LU campus. The amount of time praying is normally distributed and is measured on an interval/ratio scale.
& & & & Graduate Undergraduate
& & & & 15 & & & & & & & & & & 9
& & & & 17 & & & & & & & & & 11
& & & & 10 & & & & & & & & & & 9
& & & & 13 & & & & & & & & & & 6
& & & & 11 & & & & & & & & & & 5
& & & & 17 & & & & & & & & & & 6
a. What statistical test should be used to analyze the data?
Expert's answer
Unpaired t-test for the means should be used.

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