2
QuizMultiple Choice

Discrete Random Variables – Mean — Unit test

Question 2 • NC-Math 4

The graph shows the distribution of the amount of time (in minutes) people spend watching TV shows on a popular streaming site. The distribution is approximately Normal, with a mean of 71 minutes and a standard deviation of 15 minutes.

Question illustration
Answer
A
34%
B
68%
C
95%
D
99.7%
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