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The Number of Cell Phone Minutes Used by High School

Question 102

Multiple Choice

The number of cell phone minutes used by high school seniors follows a normal distribution with a mean of 500 and a standard deviation of 50.What is the probability that a student uses between 400 and 500 minutes?


A) 0.4773
B) 0.05228
C) 0.0228
D) 0.9773
E) None of the above

Correct Answer:

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