In 2007, the mean rate of violent crime (per 100,000 people) for 10 regions in the northeast of a certain country was 316.The standard deviation was 125.Assume that the distribution of violent crime rates is unimodal and symmetric. Complete parts (a) through (d) below. a. Using the Empirical Rule, between what two values would you expect to find about of the rates?
b. Using the Empirical Rule. between what two values would you expect to find about of the rates?
c. If a northeastern region had a violent crime rate of 301 crimes per 100,000 people, would this be considered unusual? Explain.
d. If a northeastern region had a violent crime rate of 14 crimes per 100.000 people, would this be considered unusual? Explain.