4.3: Expected Value of Random Variables | Exercise Solution of Probability & Statistics by Walpole

This is the start of a new chapter of the 9th edition of"Probability and Statistics for Engineers and Scientists by Walpole". In this video, I solve exercise problem 4.3 to find the expected value or average value of a random variable discussed in problem 3.25.
4.3 Find the mean of the random variable T representing the total of the three coins in Exercise 3.25 on page 93.
Exercise 3.25: From a box containing 4 dimes and 2 nickels, 3 coins are selected at random without replacement. Find the probability distribution for the total T of the 3 coins. Express the probability distribution graphically as a probability histogram.
• Solution Discrete Rand...
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