Do Students who play virtual reality educational software games perform better in school? In a study published in the journal a class of 90 elementary students were randomly divided into two groups of 45 children. One group used a virtual reality game to learn about geography. The other group leanred geography on the computer with a simpler user interface. All students were given an exam at the beginning and the end of the learning period. The difference in test scores for each student was recorded. The following table summarizes the results.
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Virtual Reality Game
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Simple user interface
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Sample Size
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45
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45
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Sample Mean
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43.15
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32.48
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Sample Standard Deviation
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12.57
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9.26
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a) Find with 98% Confidence interval for the difference in the long run population means between the two groups.
b) Interpret the confidence interval you found in part a