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Scores on a certain test are normally distributed. Two classes taught by the same teacher took...

Scores on a certain test are normally distributed. Two classes taught by the same teacher took the test. The morning class had 16 students and scored a mean of 94.75 and standard deviation of 4.25. The afternoon class has 24 students and scored a mean of 88.50 and standard deviation of 9.40. At first glance, it appears the morning class did better than the afternoon class. Test, at 0.05 significance level, that hypothesis

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