Question: A random variable x has an exponential distribution with a mean of 200. What is P(x > 100)? 0.60 0.135 0.367 0.40 If X is

  1. A random variable x has an exponential distribution with a mean of 200. What is P(x > 100)?

0.60

0.135

0.367

0.40

  1. If X is a normal random variable with a mean of 15 and a standard deviation of 3, then P(X = 18) is

0.3413

0.0000

0.1587

0.8413

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