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anonymous
 one year ago
Help solving
Find the critical value z a/2 that corresponds to a=0.09
anonymous
 one year ago
Help solving Find the critical value z a/2 that corresponds to a=0.09

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amoodarya
 one year ago
Best ResponseYou've already chosen the best response.0I think your question is not clear !

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0no its exactly how its written on my homework problem @amoodarya

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0dw:1436666681529:dw

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0so you want to find the Z value such that \(P(Z>z_{\alpha/2})=\alpha\); the equivalent onetailed probability is just half of that: \(P(Z>z_{\alpha/2})=\alpha/2\) so you can look at the cdf \(P(Z<z_{\alpha/2})=1\alpha/2\) and apply an inverse Z cdf (or equivalently look up the \(z_{\alpha/2}\) corresponding to an area of \(1\alpha/2\) in your Z table)

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0http://www.wolframalpha.com/input/?i=invnorm&f1=10.09%2F2&f=NormalProbabilities.pr_10.09%2F2
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