Seventy-five percent of the computers sold by a certain store are laptops. Among 150 randomly selected computer purchases, what is the approximate probability that at most 125 are laptops? What is the approximate probability that between 100 and 120 (inclusive) are laptops?
A) ; .
B) ; .
C) ; .
D) ; .
E) ; .

Question

Seventy-five percent of the computers sold by a certain store are laptops. Among 150 randomly selected computer purchases, what is the approximate probability that at most 125 are laptops? What is the approximate probability that between 100 and 120 (inclusive) are laptops? ​
A) ; . 
B) ; . 
C) ; . 
D) ; . 
E) ; .

Quizplus · Accepted Answer

The Answer of Seventy-five percent of the computers sold by a certain store are laptops. Among 150 randomly selected computer purchases, what is the approximate probability that at most 125 are laptops? What is the approximate probability that between 100 and 120 (inclusive) are laptops? ​
A) ; . 
B) ; . 
C) ; . 
D) ; . 
E) ; .

Seventy-Five Percent of the Computers Sold by a Certain Store