Justins teacher places a ticket with a students name in the jar each time they perform an act of kindness. At the end of the week the teacher will draw a ticket from the jar and award a prize. Justin has 13 tickets so far with a total of 100 in the whole jar. His goal is to have 20 tickets and he is estimating the total number of tickets at that point would be about 200. What is the probability of him winning the drawing if he meets his goal?
If Justin currently has 13 tickets out of a total of 100, then the probability of him winning the drawing is 13/100 or 0.13.
If Justin reaches his goal of having 20 tickets out of a total of 200, then the probability of him winning the drawing would be 20/200 or 0.10.
Therefore, if Justin meets his goal of having 20 tickets, the probability of him winning the drawing would decrease from 0.13 to 0.10.