Question

Help pls !! A survey asked students wether they have any siblings and pets

Answer 1

The answer is 60% I hope this helps

Answer 2

The correct answer option is B. 60%.

Explanation:

We are given the results of a survey which asked the students whether they have any siblings and pets.

We are to determine the likelihood that student has a pet, given that he or she does not have a sibling.

Assuming A to be the event showing that a student does not have a sibling and B to be the event that a students has a pet.

Then P(B|A) is:

`P(B|A)=(P(A\bigcap B))/(P(A))`

Substituting the given values, P(A)=0.25 and P(A∩B)=0.15:

`P(B|A)=(0.15)/(0.25)\\\\P(B|A)=(3)/(5)\\\\P(B|A)=0.6`

So the percentage will be:

`0.6* 100 =` 60%