In? 2011, the mean rate of violent crime? (per 100,000? people) for 24 particula
ID: 3022301 • Letter: I
Question
In? 2011, the mean rate of violent crime? (per 100,000? people) for 24 particular states was
427.
The standard deviation was
159.
Assume that the distribution of violent crime rates is unimodal and symmetric. Complete parts? (a) through? (d) below.
The graph on the right is a sketch of the distribution of the crime rates. What percentage of data should occur within two standard deviations of the? mean?
? ?%.
?(Type a whole? number.)
The graph on the right is a sketch of the distribution of the crime rates. What percentage of data should occur within two standard deviations of the? mean?
The percentage of data that occurs within two standard deviations of the mean should be? ?%.
?(Type a whole? number.)
Explanation / Answer
Answer:
95 %
EXPLANATION:
By Empirical Rule, about 95 % of data will be within two standard deviations of mean.