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.

the answer is B.

Step-by-step explanation:

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assuming you mean addition: addition and subtraction are reverse operations.

step-by-step explanation:

step-by-step explanation:

if you want to solve percent error follow these steps.

1. subtract the accepted value from the experimental value.

2. take the absolute value of step 1.

3. divide that answer by the accepted value.

4. multiply that answer by 100 and add the % symbol to express the answer as a percentage.

if you want to solve percent of change just do this.

1. work out the difference (increase) between the two numbers you are comparing.

2. divide the increase by the original number and multiply the answer by 100. if your answer is a negative number then this is a percentage decrease.

hope this : )