Yahoo Answers: Answers and Comments for A normal population has a mean of 64 and a standard deviation of 13. You select a random sample of 9.? [Mathematics]
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From Anonymous
enGB
Tue, 16 Jul 2019 11:45:12 +0000
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Yahoo Answers: Answers and Comments for A normal population has a mean of 64 and a standard deviation of 13. You select a random sample of 9.? [Mathematics]
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From Mike G: μ = 64 and σ = 13
n = 9 so √n = 3
x̅ = Sample ...
https://uk.answers.yahoo.com/question/index?qid=20190716114512AAr3p3f
https://uk.answers.yahoo.com/question/index?qid=20190716114512AAr3p3f
Tue, 16 Jul 2019 17:19:24 +0000
μ = 64 and σ = 13
n = 9 so √n = 3
x̅ = Sample mean
a) z(x̅=66) = (6664)/(13/3)
= 0.4615
From the ztables
P(z>0.4615) = 0.3228
b) z(x̅=62) = (6264)/(13/3) = 0.4615
P(z<0.4615) = 0.3228
c) P(0.4615<z<0.4615) = 0.3544

From STEPHEN: Do your own homework. If you don't underst...
https://uk.answers.yahoo.com/question/index?qid=20190716114512AAr3p3f
https://uk.answers.yahoo.com/question/index?qid=20190716114512AAr3p3f
Tue, 16 Jul 2019 13:28:00 +0000
Do your own homework. If you don't understand it talk to your teacher. Me doing it for you won't teach you anything.