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OpenStudy (anonymous):
Please help with this question involving a z-score and probability (picture attached of question) . I think that the answer would be 36.03% is that right?
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OpenStudy (anonymous):
OpenStudy (anonymous):
\[P(X<3.5)=P\left(\frac{X-4.2}{0.9}<\frac{3.5-4.2}{0.9}\right)=P(Z<-0.78)\] http://www.wolframalpha.com/input/?i=P%28Z%3C%283.5-4.2%29%2F0.9%29
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