math

A sample of 64 statistics students at a small college had a mean mathematics ACT score of 28 with standard deviation of 4. Estimate the mean mathematics ACT score for all statistics students at college. Give the 95% confidence interval.

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asked by Erma
  1. 95% = mean ± 1.96 SEm

    SEm = SD/√n

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    posted by PsyDAG

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