Question

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

Answer 1

Answer:

The correct answer option is B. 60%.

Step-by-step 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:

$P(B|A)=\dfrac{P(A\bigcap B)}{P(A)}$

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

$P(B|A)=\dfrac{0.15}{0.25}\\\\P(B|A)=\dfrac{3}{5}\\\\P(B|A)=0.6$

So the percentage will be:

$0.6\times 100 =$ 60%

Answer 2

The answer is 60% I hope this helps