Exhibit 3-1
The following data show the number of hours worked by 200 statistics students.
-Refer to Exhibit 3-1. The cumulative relative frequency for the class of 10 - 19
A)is 90
B)is .25
C)is .45
D)cannot be determined from the information given

Question

Exhibit 3-1
The following data show the number of hours worked by 200 statistics students. 
-Refer to Exhibit 3-1. The cumulative relative frequency for the class of 10 - 19
A)is 90 
B)is .25 
C)is .45 
D)cannot be determined from the information given

Quizplus · Accepted Answer

To find the cumulative relative frequency for the class of 10 - 19, we need to add up the relative frequencies for all classes up to and including that class. The relative frequency for the class of 0 - 9 is 0.05, the relative frequency for the class of 10 - 19 is 0.20, and the relative frequency for the class of 20 - 29 is 0.25. Adding these up, we get 0.05 + 0.20 + 0.25 = 0.45, which is the cumulative relative frequency for the class of 10 - 19. Therefore, the best choice is C.

Exhibit 3-1 the Following Data Show the Number of Hours Worked by Worked