SOLUTION: If 10% of the television picture tubes burn out before their guarantees has expired: (a) What is the probability that a merchant who has sold 100 such tubes will be forced to re

Question 1172790: If 10% of the television picture tubes burn out before their guarantees has expired:
(a) What is the probability that a merchant who has sold 100 such tubes will be forced to replace 20 of them?
(b) What is the probability that he will replace at least 5 and not more than 15 tubes?
Answer by ewatrrr(24785) (Show Source): You can put this solution on YOUR website!



Hi  

Binomial Distribution

p(def) = .10, n = 100

P(x = 20) = binompdf(n, p, x-value)= binompdf(100,.10,20) = .0012



Recommend using stattrek.com Binomial calculator to check YOUR work.

Wish You the Best in your Studies. 

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