Use the 68-95-99 $68 \%$ Of Her Phone Bills Are Between $\$$

question 124

Multiple Choice

Use the 68-95-99.7 rule to solve the problem.
-The amount of Jen's monthly phone bill is normally distributed with a mean of $61 and a standard deviation of $12. Fill in the blanks. $68 \%$ of her phone bills are between $\$$ and $\$$ ____

• A) 37,61
• B) 49,73
• C) 37,85
• D) 61,73

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