2. If the distribution function of a random variable is given by S(x) = 1–- for x>2 for xs2 Find the Probabilities that on a value random variable will take one value a) less than 3 b) between 4 and 5

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A: We have given in the question: P(30≤X≤79)=0.26P(X>79)=0.17

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Q: 11. Let X be a random variable with the following probability distribution: t X f(x) -3 6 2 9 T 3…

A: From the provided information,The probability distribution is as follow:x-369f (x)1/61/21/3

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A: Given that X~N0,1 and Q1~Χn1 and Q2~Χn2  Q1 and Q2 are independent.

Q: d) What is the expected value of X? e) What is the variance of X? [

A: It is given that 45% of new freshmen eventually graduate and sample size is 81.

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A:

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