Question

A clothing store owner wants to know the proportion of customers who used coupons within the last 2 years. He randomly selects 450 receipts from a database of all purchases within the last 2 years and finds that 49 of them are discounted by coupons.

Answer 1

The proportion of customers who used coupons within the last 2 years is 0.1089.

Explanation:

A proportion is the number of desired outcomes divided by the number of total outcomes.

Proportion of customers who used coupons within the last 2 years.

Desired outcomes:

Number of receipts which are discounted by coupons, which is 49

Total outcomes:

Total number of receipts, which is 450

Proportion:

`P = (49)/(450) = 0.1089`

The proportion of customers who used coupons within the last 2 years is 0.1089.