From our Class Survey 48 of the students reported having tri

From our Class Survey. 48% of the students reported having tried marijuana, and 24% of students reported that they had tried marijuana and still smoke marijuana. What is the probability that a student still smokes marijuana given that the student has tried marijuana? A) 0.25 B)0.76 C) 0.46 D) 0.50

Solution

P(marijuana) = 0.48

P(tried and still use marijuana) = 0.24

Say the number of people in all is 100

So, 48 of them tried marijuana

And outta those 48, 24 still smoke it

P(stil smokes marijuana | tried marijuana) = 24 / 48 = 1/2

0.5

Option D