# Question

Suppose that in Exercise 2.4-1, X = 1 if a red ball is drawn and X = −1 if a white ball is drawn. Give the pmf, mean, and variance of X.

## Answer to relevant Questions

(i) Give the name of the distribution of X (if it has a name), (ii) Find the values of μ and σ2, and (iii) Calculate P(1 ≤ X ≤ 2) when the moment-generating function of X is given by Suppose an airport metal detector catches a person with metal 99% of the time. That is, it misses detecting a person with metal 1% of the time. Assume independence of people carrying metal. What is the probability that the ...Let f(x) = 1/2, 0 < x < 1 or 2 < x < 3, zero elsewhere, be the pdf of X. (a) Define the cdf of X and sketch its graph. (b) Find q1 = π0.25. (c) Find m = π0.50. Is it unique? (d) Find q3 = π0.75. Use the moment-generating function of a gamma distribution to show that E(X) = αθ and Var(X) = αθ2 A certain type of aluminum screen 2 feet in width has, on the average, three flaws in a l00-foot roll. (a) What is the probability that the first 40 feet in a roll contain no flaws? (b) What assumption did you make to solve ...Post your question

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