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May 30, 2015

Homework Help: stats

Posted by CM on Wednesday, October 14, 2009 at 3:44pm.

You pick 2 M&Ms from a large bag. What is the probability that 1) at least one is brown? 2) not all are blue?
brown=13%
yellow=14%
red=13%
blue=24%
orange=20%
green=16%

1) P(at least one M&M is brown)
= 1 - P(no M&M is brown)
= 1 - (0.87) = 0.13
Is this correct?

2) P(not all M&Ms are blue)
= 1 - P(all M&Ms are blue)???

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