Statistics questions

Statistics
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The diameter of ball bearings are distributed normally.  The mean diameter is 85 and the variance is 25. Find the probability that the diameter of a selected bearing is greater than 95 millimeters.  

Mar 2nd, 2015

z = (95-85)/5 =10/5=2

P(z>2) = 1-0.97725 = 0.02275 = 2.28%

Mar 2nd, 2015

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Mar 2nd, 2015
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Mar 2nd, 2015
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