Posted by jane on .
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?
(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.