Multiple Choice
Use the empirical rule to solve the problem.
-The amount of Jen's monthly phone bill has a roughly bell-shaped distribution with a mean of $57 and a standard deviation of $9. What percentage of her phone bills are between $30 and $84?
A) 99.7%
B) 95%
C) 99.99%
D) 68%
Correct Answer:
Verified
Correct Answer:
Verified
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