The numbers of hours worked (per week) by 400 statistics students are shown below. The percentage of students who work at least 20 hours per week is
A) 25%.
B) 50%.
C) 75%.
D) 100%.

Question

The numbers of hours worked (per week) by 400 statistics students are shown below.  ​ The percentage of students who work at least 20 hours per week is
A) 25%. 
B) 50%. 
C) 75%. 
D) 100%.

Quizplus · Accepted Answer

To find the percentage of students who work at least 20 hours per week, we need to first find the total number of students who work at least 20 hours per week. Looking at the graph, we can see that there are 300 students who work at least 20 hours per week (100 at 20-24, 100 at 25-29, and 100 at 30 or more).

To find the percentage, we divide the number of students who work at least 20 hours per week (300) by the total number of students (400) and multiply by 100:

(300/400) x 100 = 75%

Therefore, the answer is C) 75%.

The Numbers of Hours Worked (Per Week) by 400 Statistics