SOLUTION: a seed company advertises that, if its seeds are properly planted, 95% of them will germinate. What is the probability that, when 20 seeds are properly planted, at least 15 will g

Question 980506: a seed company advertises that, if its seeds are properly planted, 95% of them will germinate. What is the probability that, when 20 seeds are properly planted, at least 15 will germinate - answer
Answer by htmentor(1343) (Show Source): You can put this solution on YOUR website!
This is a binomial probability problem with P(success) = 0.95
In this case the number of trials is 20 and the number of successes is 15 or greater.
P(15 germinate) = C(20,15)*0.95^15*0.05^5 = 0.00257
etc.
If we calculate all the probabilities P(15) to P(20) and add we get 0.99967.
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