Question

For a normally distributed variable, what is probability between of a value: μ - 3σ and...

For a normally distributed variable, what is probability between of a value: μ - 3σ and μ + 3σ

A) 0.9973002

B) 0.95449974

C) 1.96

D) 68%

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Answer #1

solution

μ - 3σ and μ + 3σ

using empirical rule

( - 3< X < + 3) = 99.7%

answer=0.9973002

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