Solve the following problems. Show your complete solution, table, and conclusion. Write the answers

on a separate sheet of paper.

. What is the mean and variance if a number is picked from a jar containing three 25. four 55, and three 75? . The manager of Nike Philippines is giving away 50 tickets for a promo. One ticket will win Php 1 000. The other tickets will win nothing. If you will be given one of the tickets. what will be your expected value and variance of your gain? . A box contains balls numbered 1 through 5. You are to draw a ball from the box, and you will be paid 12 chips if the number is even. However, you are going to pay seven chips if the number is odd. What is the mean and variance of the possible results