Please solve the problem. Show your complete solution and the formula that you use. Thank you so much! (Identify all what is needed in the problem)

Instruction: Solve the following problems. Show your complete solution. You may write your solution on the blank page provided. (10 points each) 1. A fair coin is tossed 3 times. Let the random variable X denote the number of heads in 3 tosses of the coin. Identify the sample space and the space of the random variable X; illustrate the ran- dom variable; and construct the probability mass function and its corresponding probability histogram