8
QuizMultiple Choice

Finding Areas within a Normal Distribution

Question 8 • TN-Mathematical Reasoning for Decision Making (Supplement)

The graph shows the distribution of the number of text messages young adults send per day. The distribution is approximately Normal, with a mean of 128 messages and a standard deviation of 30 messages.

Question illustration
Answer
A
16%
B
34%
C
68%
D
84%
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