Use the Empirical Rule to Solve the Problem

question 41

Multiple Choice

Use the empirical rule to solve the problem.
-The amount of Jen's monthly phone bill is normally distributed with a mean of $78 and a standard deviation of $9. What percentage of her phone bills are between $51 and $105?

• A)68%
• B)95%
• C)99.7%
• D)99.99%

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Definitions:

Large Fenestrae

Large fenestrae are large pores found in some capillary walls, facilitating the rapid exchange of substances between blood vessels and surrounding tissues.

Endocrine Glands

Glands that produce hormones and release them directly into the bloodstream to regulate various body functions.

Semilunar Valves

Heart valves located at the exits of the right and left ventricles, preventing blood from flowing back into the ventricles after it has been pumped out.

Medium Veins

Veins that are larger than venules but smaller than the large veins, carrying blood back towards the heart and often accompanying medium arteries.