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DarkendSinz30
 2 years ago
I really need help in understanding this??
DarkendSinz30
 2 years ago
I really need help in understanding this??

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DarkendSinz30
 2 years ago
Best ResponseYou've already chosen the best response.0Consider a population with u=70.2 and o=4.61. (A) Calculate the zscore for x=73.2 from a sample of size 10. (B) Could this zscore be used in calculating probabilities using Table 3 in Appendix B of the text? Why or why not?

CliffSedge
 2 years ago
Best ResponseYou've already chosen the best response.1I take it u=µ and o=σ? I can't help you with what Appendix B is in your book, but I can show you the zscore formula.

DarkendSinz30
 2 years ago
Best ResponseYou've already chosen the best response.0Yeah the symbols are that way and I think I have the zscore formula but could use a refresher

CliffSedge
 2 years ago
Best ResponseYou've already chosen the best response.1\[\huge z=\frac{xµ}{s_x}\] \[\huge s_x = \frac{σ}{√n}\]

DarkendSinz30
 2 years ago
Best ResponseYou've already chosen the best response.0I have Appendix B table 3 pulled up from my book so if we can get the problem solved I can do the rest please

CliffSedge
 2 years ago
Best ResponseYou've already chosen the best response.1Cool. Use those formulas, and you should be fine. Try here for more info: http://stattrek.com/probabilitydistributions/standardnormal.aspx?tutorial=ap http://stattrek.com/sampling/samplingdistribution.aspx?Tutorial=AP

DarkendSinz30
 2 years ago
Best ResponseYou've already chosen the best response.0Thank you so much so far everything I have looked at including my text book has been confusing.

CliffSedge
 2 years ago
Best ResponseYou've already chosen the best response.1Stats is a messy place. It takes a strong combination of mathematical skill and good ol' common sense. Good luck!
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