The bar graph shows the rents paid per month for apartments in an urban neighborhood. The
curve shows that the rents are normally distributed.
% ofRespondents
40-
30-
20
10-
Rent
>$749
Estimate the percent of apartment residents who pay from $600 to $749 per month.
(1 point)
93%
68%
43%
25%
<$600
$600-649
$650-699
$700-749
The percent of apartment residents who pay from $600 to $749 per month can be estimated by finding the area under the curve for the rent range from $600 to $749.
Since the curve represents a normal distribution, we can use the empirical rule to estimate the percentage. The empirical rule states that for a normal distribution, approximately 68% of the data falls within one standard deviation from the mean, 95% within two standard deviations, and 99.7% within three standard deviations.
In this case, the rent range from $600 to $749 falls within one standard deviation of the mean, so approximately 68% of apartment residents pay in this range.
Therefore, the correct answer is:
68%