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Help with Algebra Question6

label Algebra
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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 the diameter will exceed 0.72 inch? (round answer to three decimal places.)

Dec 9th, 2014

P (x > 0.72) = P (z > (0.72-0.7)/0.02) = p(z>1) 

P(z< 1) = 0.5 +0.3413 = 0.8413

P (z> 1) =1-0.8413 = 0.1587

Answer: 0.1587 = 0.159

Dec 9th, 2014

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Dec 9th, 2014
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Dec 9th, 2014
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