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Methods2025 Exam 2 Section A · Q12CAS active1 mark

Normal distribution mean and standard deviation from probabilities

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For a normal random variable $X$ , it is known that $\Pr(180 < X < 200) = 0.589$ and $\Pr(180 < X < 200) = 0.589$

The mean and standard deviation of $X$ are closest to

1 mark

A190 and 10B190 and 11C195 and 10D195 and 11

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