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March 25, 2017

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1. Consider a population with µ=73.6 and 0 = 5.38
(A) Calculate the z-score for x =72.7 from a sample of size 45.
(B) Could this z-score be used in calculating probabilities using Table 3 in Appendix B of the text? Why or why not?

  • Statistics - ,

    (A) I don't know if your "x" stands for an individual score or the sample mean.

    If individual score, ignore sample size.

    Z = (score-mean)/SD

    If sample mean:

    Z = (score-mean)/SEm

    SEm = SD/√n

    (A) We still don't have your Table 3 or know what it is.

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