Calculate the mean, µY, of the random variable Y from Exercise 3.5.7. Exercise 3.5.7 The prevalence of

Question:

Calculate the mean, µY, of the random variable Y from Exercise 3.5.7.
Exercise 3.5.7
The prevalence of mild myopia (nearsightedness) in adults over age 40 is 25% in the U.S. Suppose four adults over age 40 are chosen at random from the population; let Y denote the number with myopia out of the four. Then the probability for Y is given by the following table:

Distribution
The word "distribution" has several meanings in the financial world, most of them pertaining to the payment of assets from a fund, account, or individual security to an investor or beneficiary. Retirement account distributions are among the most...