Kim eats out with friends on 70% of all her Friday evenings.She goes to see a film on 15% of all her Friday evenings.On 10% of all her Friday evenings, she both eats out with friends and goes to see a film.If Kim goes out to eat with friends on a given Friday, what is that probability that she also goes to see a film?

Question

Quizplus · Accepted Answer

The probability that Kim goes to see a film given she eats out with friends is found using the formula for conditional probability: P(A and B) / P(A). Here, A is the event of eating out with friends, and B is the event of going to see a film. Given P(A and B) = 10% and P(A) = 70%, the probability is (10% / 70%) = 1/7, which is approximately 14%.

Kim Eats Out with Friends on 70% of All Her