Question

the records of a computer retail store show that out of the 100 customers who purchased a desktop computer last month 72 also purchased a service plan that extends the warranty for an extra year. Out of 25 customers who purchased a notebook computer last month 20 purchased the same service plan. Fill in the blanks.                             Last month customers of the store who purchased___________ computers were less likely to purchase the service plan because__% did not purchase the service plan whereas only__% of the customers who bought__________ computers did not purchase the service plan.

Answer 1

Out of 100 desktop customers, 72 purchase service plan and 100 - 72 = 28 will not. So the percentage of desktop customers who do not purchase a service plan is 28%.

Out of 25 customers, 20 purchase service plan and 25 - 20 = 5 will not. So the percentage of notebook customers who do not purchase service plan is 5 / 25 = 0.2, that is 20%.

Last month, customers of the store who purchased notebook computers were less likely to purchase the service plan, because 28% did not purchase the service plan, whereas only 20% of the customers who bought desktop computers did not purchase the service plan.