Question

On a soccer team, 5 out of 13 players surveyed said they had two or more siblings. The league has 520 players. Which is the best prediction of the number of players in the league that have two or more siblings? A.40 B.200 C.12 D.120

Answer 1

b.200, it's b because i say so:)

Answer 2

The best prediction of the number of players in the league that have two or more siblings is 200.

Explanation:

On a soccer team, 5 out of 13 players surveyed said they had two or more siblings.

Let A be the event that the randomly selected player has two or more siblings.

So,
`P(A)=(5)/(13)`

The expected value is the sum of product of each of the possible outcomes and the probability of the outcome occurring. Mathematically,

`E(X) =\sum x\cdot P(X = x)`

So, here the number of players in the league that have two or more siblings will be,

`E(X) =520* (5)/(13)=200`