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 Probability and Statistics Basic Probability and Statistics Math Forum

 October 12th, 2013, 11:52 AM #1 Senior Member   Joined: Oct 2009 Posts: 895 Thanks: 1 probability could please check answer(2) The two events A and B have probabilities 0.2 and 0.4. Also P (A n B)=0:08. (a)Are the two events A and B independent? Explain. (b) Find the probability that either A or B or both occur. (c) Find the probability that neither A nor B occurs. (d) Find the probability that exactly one of A or B occurs. (a) For 2 events to be independent they must satisfy: P(A n B) = P(A)*P(B) which makes them independent .. Correct ? (b) hmm not sure about this one! need some helpp (c) P(neither A or B) = 0.8*0.6 Correct? (d) hmm maybe P = 0.2*0.6 + 0.4*0.8 = 0.44 ????? October 12th, 2013, 11:57 AM #2 Senior Member   Joined: Dec 2012 Posts: 372 Thanks: 2 Re: probability could please check answer(2) Your responses are all correct. The event of (b.) is actually the complement of (c.) if you check carefully. Hence, the answer for this one is . Tags answer2, check, probability Thread Tools Show Printable Version Email this Page Display Modes Linear Mode Switch to Hybrid Mode Switch to Threaded Mode Similar Threads Thread Thread Starter Forum Replies Last Post r-soy Probability and Statistics 3 October 14th, 2013 04:18 AM OriaG Probability and Statistics 1 April 6th, 2013 11:27 AM shin777 Probability and Statistics 2 December 15th, 2011 04:31 PM r-soy Algebra 3 December 22nd, 2009 12:44 PM packerfan128 Calculus 1 December 11th, 2008 04:16 PM

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