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2- Choose the correct answer If the continuous random variable X is uniformly distributed with a mean of 70 and a standard deviation of (10v3). The probability that X lies between 80 and 110 is: a. Farundom variable hass pobabiliy densitE osone o the ab A 1/4 D 2/3 b. If a random variable X has a probability density functiontada 30 +4) 0sxs1 then the variance of X is closest to A/0.084 rre . B 0.519 С 0.354 D 0.290 E none of the above c. The continuous random variable X has probability density function f given by 3 (4x0s x s8 then E(X ) is equal to 0 otherwise 64 24 D 0.25 E 4 d. If random variable X has a mean μΧ-5 and a standard deviation σ r-4, and-2-X then: BB+--3 and σ r -2 e Let X be a real-valued, continuous random variable and let Y-. Then, Ify 2 0, then the cumulative distribution function Fly GOOD LUCk)

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