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What is the estimate of the standard error for freshmen if freshmen mean 2.59, STDev.45 Number of observations 200 and for seniors Mean GPA 2.84

What is the estimate of the standard error for freshmen if freshmen mean 2.59, STDev.45 Number of observations 200 and for seniors Mean GPA 2.84 STDev.32 and Number of observations 217

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