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

Question

Quizplus · Accepted Answer

The 68-95-99.7 rule, also known as the empirical rule, states that for a normal distribution, approximately 68% of the data falls within one standard deviation of the mean. Therefore, to find the range, we add and subtract one standard deviation ($12) from the mean ($61), resulting in $61 - $12 = $49 and $61 + $12 = $73.

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

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