Help with Statistic Question17

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The diameter of an electric cable is normally distributed, with a mean of 0.7 inch and a standard deviation of 0.02 inch. What is the probability that the diameter will exceed 0.72 inch? (Round answer to three decimal places.)

Dec 5th, 2014

The z-score is x-mean/ Standard Deviation

=( 0.72 -0.7)/0.02 

=1 

P(z>1) = 1-0.841 = 0.159

Dec 5th, 2014

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Dec 5th, 2014
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