99,7%
-95%
-68% +
Not everyone pays the same price for
the same model of a car. The figure
illustrates a normal distribution for the
prices paid for a particular model of a
new car. The mean is $18,000 and the
standard deviation is $1000
Use the 68-95-99.7 Rule to find what
percentage of buyers paid between
$15,000 and $18,000.
Number of Car Buyers
15 16 17 18 19 20
Price of a Model of a New Car (Thousands)
21
The percentage of buyers who paid between $15,000 and $18,000 is
(Type an exact answer.)
%.