# Question

Let the pmf of X be defined by f(x) = 6/(π2x2), x = 1, 2, 3, . . .. Show that E(X) = +∞ and thus, does not exist.

## Answer to relevant Questions

Let X be a random variable with support {1, 2, 3, 5, 15, 25, 50}, each point of which has the same probability 1/7. Argue that c = 5 is the value that minimizes h(c) = E( |X − c| ). Compare c with the value of b that ...For each of the following distributions, find μ = E(X), E[X(X− 1)], and σ2 = E[X(X− 1)] + E(X) − μ2: A company starts a fund of M dollars from which it pays $1000 to each employee who achieves high performance during the year. The probability of each employee achieving this goal is 0.10 and is independent of the ...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 ...The weekly demand X for propane gas (in thousands of gallons) has the pdf If the stockpile consists of two thousand gallons at the beginning of each week (and nothing extra is received during the week), what is the ...Post your question

0