Josie believes that her mom calls her at the most inconvenient times. As a matter of fact, Josie thinks that 80 percent of the times that her mom calls, she is busy doing important tasks such as schoolwork, driving, or feeding the family pets. Which is the best interpretation of this probability?
Answer
A
Over the course of many weeks, about 80 percent of the calls from Josie’s’ mom will come when she is busy doing important tasks.
B
Josie’s mom is calling her 80 percent of the day.
C
If Josie is doing 10 important tasks in one day, her mom will call during 8 of those tasks.
D
Josie has an 80 percent chance of completing her important tasks without her mom calling her.
Explanation
The 80 percent refers to the proportion of her mom’s calls that happen while Josie is busy. Over many calls, about 80 percent would be expected to occur during important tasks. It does not mean her mom calls for 80 percent of the day or that 8 out of every 10 tasks will definitely be interrupted.
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