The following histogram depicts the prevalence rates of a particular genetic marker in samples among 25 impoverished communities in 2004. In each interval, the left endpoint is included but not the right endpoint, so the class intervals are 10 ≤ rate < 15, 15 ≤ rate < 20, . . . .

How many communities have a prevalence rate of 30% or higher?

Question

The following histogram depicts the prevalence rates of a particular genetic marker in samples among 25 impoverished communities in 2004. In each interval, the left endpoint is included but not the right endpoint, so the class intervals are 10 ≤ rate < 15, 15 ≤ rate < 20, . . . .
 ​
How many communities have a prevalence rate of 30% or higher?

Quizplus · Accepted Answer

The Answer of The following histogram depicts the prevalence rates of a particular genetic marker in samples among 25 impoverished communities in 2004. In each interval, the left endpoint is included but not the right endpoint, so the class intervals are 10 ≤ rate < 15, 15 ≤ rate < 20, . . . .
 ​
How many communities have a prevalence rate of 30% or higher?

The Following Histogram Depicts the Prevalence Rates of a Particular