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Probability and statistics help it

label Statistics
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Oct 21st, 2017

Z-score = (7.6 -8.4)/ (1.8/ SQR40) = -0.8/0.2846 = -2.8

P(z=<-2.8) = 0.0025  Option B

Mar 14th, 2015

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Oct 21st, 2017
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