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Sally travels to work by train every day the probability that her train will be late on any day is 0.16

 

 Jul 29, 2020
 #1
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0.16+0.84*0.16=0.2944 so the probabiltity is 0.2944 or 29.44% that she will be late on one of these 2 days

 Jul 29, 2020

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