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3 April, 05:29

If it snows tomorrow, the probability is 0.9 that John will practice his trombone. If it does not snow tomorrow, there is on a 0.5 chance that John will practice. Suppose the chance of snow tomorrow is 50%. What is the probability that John will practice his trombone?

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  1. 3 April, 06:22
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    0.7

    Step-by-step explanation:

    0.5X0.9+0.5X0.5=0.7
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