The length of time it takes to assemble a particular electronic component varies from one employee to another.Management has collected the time (in minutes)it took 20 different employees to assemble the component.The information is summarized in the following frequency distribution generated by Excel:
Which of the following statements is true?
A)50% of all the workers took exactly 15 minutes to assemble the component.
B)100% of all the workers took longer than 25 minutes to assemble the component.
C)Eleven workers assembled the component in 20 minutes or less.
D)Seven workers took 25 minutes or longer to assemble the component.

Question

The length of time it takes to assemble a particular electronic component varies from one employee to another.Management has collected the time (in minutes)it took 20 different employees to assemble the component.The information is summarized in the following frequency distribution generated by Excel: 
Which of the following statements is true?
A)50% of all the workers took exactly 15 minutes to assemble the component. 
B)100% of all the workers took longer than 25 minutes to assemble the component. 
C)Eleven workers assembled the component in 20 minutes or less. 
D)Seven workers took 25 minutes or longer to assemble the component.

Quizplus · Accepted Answer

Option A is false because the frequency of workers who took exactly 15 minutes is not given in the frequency distribution.

Option B is false because the maximum time recorded in the frequency distribution is 25 minutes, so it is impossible for all workers to take longer than 25 minutes to assemble the component.

Option C is true because the frequency distribution shows that 11 workers took 20 minutes or less to assemble the component.

Option D is false because the frequency of workers who took 25 minutes or longer is not given in the frequency distribution.

The Length of Time It Takes to Assemble a Particular