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Probability

Let X be a normally distributed random variable with µ = 100 and σ = 10. The probability that X is between 70 and 110 is (to the nearest whole percent)

a. 8 %
b. 84 %
c. 95%
d. answer not listed

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Answer: B

Since X is normally distributed with µ = 100 and σ = 10, let Y = (X ...

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