Rudolf goes to the gym. The probability that he will use the treadmill is 0.8 When he uses the treadmill, the probability that he will use the cross trainer is 0.3 When he does not use the treadmill, the probability that he will use the cross trainer is 0.6 (a) Complete the probability tree diagram for this information. (2) (b) Work out the probability that Rudolf uses both the treadmill and the cross trainer. (2)

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