A professional pool player claims that she sinks at Based on the dotplot of the simulation results and the least one ball in a pocket on 80% of her opening breakpool player's last 20 games, which conclusion can be
shots. In a recent set of 20 games, she sunk at least drawn?
one ball on her break shot in only 14 of the games. A
simulation of 100 trials was conducted to see how
The player's true probability of sinking at least one
unusual these most recent games are.
ball on her break is 27%.
The Professional Pool Player
Another 100 simulated trials would show a much
different outcome; therefore, we cannot draw any
conclusions.
It is most likely that she would sink at least one ball
20
during her break exactly 16 times.
There is about a 27% chance of her sinking at least
one ball on her break 14 or fewer times in 20 games.
This result is not unusual and there is no convincing
10
evidence that her average is less than 80%.
25
15
Frequency
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5
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