Question
The random variable X has a log-normal distribution, when the mean of ln(X) = 5.45 and variance of ln(X) = 0.334,
what is the probability that X >139.76?
what is the probability that X >139.76?
Answers
ln(139.76) = 4.94
So, just look up Z>(4.94-5.45)/0.334
So, just look up Z>(4.94-5.45)/0.334
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