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QUESTION
Worldwide, approximately 70% of smart phones run the Android operating system (A) while 30% run a non-Android operating system (Ac).
Worldwide, approximately 70% of smart phones run the Android operating system (A) while 30% run a non-Android operating system (Ac). Suppose 2 smart phones are ran- domly selected (assume independence).
(a) Determine the probability that the first runs Android (A1) or the second runs Android (A2).
(b) Determine the probability that exactly 1 runs Android.
