Exhibit 2-10.Automobiles traveling on a road with a posted speed limit of 65 miles per hour are checked for speed by a state police radar system.The following table is a frequency distribution of speeds. Refer to Exhibit 2-10.How many of the cars traveled less than 75 miles per hour?
A)275
B)325
C)650
D)675

Question

Exhibit 2-10.Automobiles traveling on a road with a posted speed limit of 65 miles per hour are checked for speed by a state police radar system.The following table is a frequency distribution of speeds.  Refer to Exhibit 2-10.How many of the cars traveled less than 75 miles per hour?
A)275 
B)325 
C)650 
D)675

Quizplus · Accepted Answer

To find the number of cars traveling less than 75 miles per hour, we need to add up the frequencies for all speeds from 0-74. Since the frequencies for speeds from 0-74 are already included in the frequency distribution for speeds from 0-79, we simply need to add up the frequencies for speeds from 75-79, which is 650. Therefore, the answer is 650.