At a large university, the probability that a student takes calculus and is on the dean's list is 0.042. the probability that the student is on the deans list is 0.21. Find the probability that the student is taking calculus, given that he or she is on the deans list.

Question

anonymous · Answer

conditional probability - i'll have to revise it!!

anonymous · Answer

right required proibability = P(Calculus and on deans list) / P(denos list) = 0.042 / 0.21 = 0.2

the other guy was right

anonymous · Answer

so do i multiply or divide

anonymous · Answer

i dont want to give you are wrong answer Vive so I'll recheck

anonymous · Answer

OK the propabilty of C given A is

  P(A intersect C) / P(A)

here the the top of fraction = 0.042 and P(A) = 0.21

so its divide P = 0.042 / 0.21 = 0 .2  or 20%

anonymous · Answer

here P(A) = probabilty hes on deans list and P(C) is P  he takes calculas
I'm confident of that

anonymous · Answer

oh ok ok making sense

anonymous · Answer

good