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To assess the job performance of employees with and without a college degree, 274 college and...

To assess the job performance of employees with and without a college degree, 274 college and 148 non-college participants were sampled.  In the area of motivation for advancement, the mean scores were 2.89 for college participants and 2.70 for non-college participants, with the standard deviations being .57 and .64, respectively.  Find a 99% confidence interval for the difference between the meanscores of the two respective populations in the area of motivation for advancement.

Math   Statistics-And-Probability   
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Answer #1

99% confidence interval for the difference between the mean scores the two respective populations is (0.028,0.352).

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