Question

A randomly selected sample of $1,000$ individuals were asked whether they were planning to buy a new cellphone in the next $12$ months. A year later the same persons were interviewed again to find out whether they actually bought a new cellphone. The response of both interviews is given below

	Buyers	Non-buyers
Plan to buy	$200$	$50$
No plan to buy	$100$	$650$

If a person was selected at random, what is the probability that he/she (i) had a plan to buy.

• A. $\frac{1}{4}$
• B. $\frac{2}{4}$
• C. $\frac{3}{4}$
• D. $\frac{1}{5}$

Answer 1

The correct option is A $\frac{1}{4}$

$P$(plan to buy) $=\frac{PeoplePlanToBuy}{Total}$

$\frac{250}{1000}=\frac{1}{4}$