Two Basic Rules of Probability · Exercise 30
In a box of assorted cookies, 36 percent contain chocolate and 12 percent contain nuts. Of those, 8 percent contain both chocolate and nuts. Sean is allergic to both chocolate and nuts.
(a) Find the probability that a cookie contains chocolate or nuts (he can't eat it).
(b) Find the probability that a cookie does not contain chocolate or nuts (he can eat it).
OpenStax, Statistics · §3.3 Two Basic Rules of Probability · Exercise 30
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