The distribution of cell phones calls is normally distributed with mean 79 and a standard deviation of 10. (Round to 2 decimal places) a) 96 is standard deviations above the mean. b) 106 is standard deviations above the mean. c) -2.16 standard deviations below the mean is

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Q: 1. Suppose that a group of illegal counterfeiters print 1,000 copies of fake $20 bills and introduce...

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Q: dally. (a) Approximate the probability that more than 10500 commuters will use the light rail daily.

A: Here use normal approximation 

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Q: x 30 x<20 F(x) ={ 4x3-3x 20<x<30 1 x2 30 x<20 x2 F(x) = +4 20 <x<30 10 %3! 1600 x2 30 0. x<20 +2 4 F...

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Q: 15. 3 4 5 P(x) 10 ? 10 -/- 2.

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A: Rules : To Evaluate the null hypothesis, typically denoted with H0. The null is not rejected unless ...