Suppose the probability that my phone is charged is 1/2, and the probability that my laptop is charged is 3/4. Suppose also that the probability that my laptop is charged given that my phone is charged is 2/3. What is the probability that at least one of my phone and laptop are charged?
The rules:
The conjunction rule is: P(A and B) = P(A) x P(B/A). Use fractions with this rule rather than odds.
The disjunction rule is: P(A or B) = P(A) + P(B) - P(A and B). Use fractions rather than odds. Find the common denominator before addition/subtraction.
Select an answer and submit.
A) 11/12
B) 3/4
C) 14/17
D) None of the above