MATH

what is the unknown standard deviation of this problem Ho: m=4.7 Ha: m<4.7 alpha 1% standard deviation: unknown after a random sample of 36 the mean is 4.5 with s=0.42

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asked by AL
  1. Are you talking about Standard Error of the mean (SEm)?

    SEm = SD/√n

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    posted by PsyDAG

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