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Let X be a continuous random variable with E(X') = i! for 1=0,1, 2, .... (a) Show that X has an exponential distribution. State its

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Let X be a continuous random variable with E(X') = i! for 1=0,1, 2, .... (a) Show that X has an exponential distribution. State its parameter. (b) If X , X,..... X are independent observations for X . Calculate the probability that 4 out 10 observations are greater than 5

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