Violent crimes include rape, robbery, assault, and homicide. The following is a summary of the violent-crime rate (violent crimes per 100,000 population) for all states of a country in a certain year. Complete parts (a) through (d).

Q1=271.8,

Q2=388.5,

Q3=529.1

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Part 1

(a) Provide an interpretation of these results. Choose the correct answer below.

A.

25% of the states have a violent-crime rate that is

271.8

crimes per 100,000 population or more. 50% of the states have a violent-crime rate that is

388.5

crimes per 100,000 population or more. 75% of the states have a violent-crime rate that is

529.1

crimes per 100,000 population or more.

B.

25% of the states have a violent-crime rate that is

271.8

crimes per 100,000 population or less. 50% of the states have a violent-crime rate that is

388.5

crimes per 100,000 population or less. 75% of the states have a violent-crime rate that is

529.1

crimes per 100,000 population or less.

Your answer is correct.

C.

75% of the states have a violent-crime rate that is

271.8

crimes per 100,000 population or less. 50% of the states have a violent-crime rate that is

388.5

crimes per 100,000 population or less. 25% of the states have a violent-crime rate that is

529.1

crimes per 100,000 population or less.

Part 2

(b) Determine and interpret the interquartile range.

The interquartile range is

257.3257.3

crimes per 100,000 population.

(Type integer or a decimal.)

Part 3

Interpret the interquartile range. Choose the correct answer below.

A.

The middle 25% of all observations have a range of

257.3

crimes per 100,000 population.

B.

The middle 50% of all observations have a range of

257.3

crimes per 100,000 population.

C.

All observations have a range of

257.3

crimes per 100,000 population.

D.

The middle 50% of all observations have a range of

116.7

crimes per 100,000 population.