Question

There are three shopping preferences for a survey: mall, stand-alone store, and online. The paying preferences are store card, credit card, cash, gift card, and check. Assume equal probabilities within categories. What is the probability of paying by gift card or check? 1/5 2/5 3/5 4/5

Answer 1

The correct answer is B. 2/5

Explanation:

This is the information given to us:

A. Shopping preferences for the survey:

1. Mall

2. Stand-alone store

3. Online

B. Paying preferences:

1. Store card

2. Credit card

3. Cash

4. Gift card

5. Check

Assume equal probabilities within categories.

It means that each of the paying preferences has the same probability of being selected, if there are five, it means each paying preference has 1/5 of probability and if we're choosing two of them: gift card or check, we have

1/5 + 1/5 of probability = 2/5

The probability of paying by gift card or check is 2/5