Sean is a dedicated Skee Ball player who always rolls for the 50-Point slot. The probability distribution of Sean's score X on a randomly
selected roll of the ball is shown.
Score 10 20 30 40 50
Probability .32 .27 .19 .15 .07
1. How many points should Sean expect to score on a single roll?
(round to the nearest tenth, no spaces)
2. If Sean rolls 9 balls (the standard number in a single Skee ball game), what should Sean expect his total score to be?
(round to the nearest tenth, no spaces)
