Posted by Anna on Saturday, November 14, 2009 at 4:44pm.
Okay, hete is how to solve this problem:
Since the probability that Alysha will miss is 0.15, that means that it is 15%, right? So, the probability that Alysha will NOT miss is 100 - 15, which is 85%. So the answer is 0.85
Now for Carla. 0.07 = 7%.
100 - 7 = 93%. So the answer is 0.93.
prob(Alysha miss school AND Carla miss school) = (.15)(.07) = .0105
So prob that both will not miss school
= 1 - .0105
= .9895
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