OpenStax, Introductory Statistics 2e §3.3 Two Basic Rules of Probability · Try It 4 · Probability · Counting & chance
Two Basic Rules of Probability · Try It 4
A student goes to the library. Let events B = the student checks out a book and D = the student checks out a DVD. Suppose that P(B) = 0.40, P(D) = 0.30 and P(D|B) = 0.5.
(a) Find P(B AND D).
(b) Find P(B OR D).
Its source prints no answer for this problem, so there's nothing to check against.
OpenStax, Introductory Statistics 2e · §3.3 Two Basic Rules of Probability · Try It 4
Stuck? A gentle nudge
No hints for this one.
Your working
Check your full solution
Upload photos of your handwritten work or a PDF, and Lemma will read it and tell you whether it's right — and where it first goes wrong if not.