Question

Stephen has surveyed their 21 classmates about the number of credit cards in their wallet and received the data in the table below.Find the probability that for a randomly selected classmate the number of credit cards in their wallet is 3. Round the answer to 4 decimal places.

Answer 1

0.0952

Step-by-step explanation

We have that Stephen surveyed 21 of his classmates and obtained the data in the table given.

To find the probability for which a randomly selected classmate has 3 credit cards in their wallet, we have to divide the number of people that had 3 credit cards in their wallet by the total number of people surveyed.

From the frequency table, we have that only 2 classmates had 3 credit cards in their wallets.

Therefore:

`P\left(3creditcards\right)\text{ = }(2)/(21)\text{ = 0.0952}`

That is the answer.