Find the first two moments about the mean for the random variable X defined by X =-2 with prob. 1/3 = 3 with proh, 12 %3D %3D

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A: Hi! Thank you for the question, As per the honor code, we are allowed to answer one question at a…

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A: Mean = 40 Variance = 20 Standard error = 1

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Q: X is an exponential random variable with the population's mean (ux) = 52. %3D What is P(X < 48)?

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A: Hello! As you have posted more than 3 sub parts, we are answering the first 3 sub-parts(mean of X,…

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A: see the handwritten solution

Q: A normal distribution has a mean of u = 100 with o= 20. If one score is randomly selected from this…

A: Mean = 100 Standard deviation = 20

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Q: Let X be a random variable with a variance of 2. Find the variance of 5X+5. Answer: Var(5X+ 5)=

A: We can find the answer as below

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A: Given that,X = 21Mean = 27Variance = 9

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