Two fair 10-cent coins are tossed. The random variable X cents representsthe total value of the coins that land heads up.Find E(X) and Var(X). 相关知识点: 试题来源: 解析 The probabiity distribution of X is:r1020P(X=x)1/4 1/2 1/4 E(X)=10by|n5pect ionVar(X)=E(X^2)-(...
To analyze the probability that “heads” will come up m times out of n throws without regard to the order of the outcomes, let us imagine that n coins are laid out in a row and that each coin is tossed once. If m coins show “heads” the number of coins showing “tails” is n...
To solve the problem step by step, we will define the variables and set up equations based on the information given.Step 1: Define Variables Let: - \( x \) = number of 25 paise coins - \( y \) = number of 50 paise coins<