SOLUTION: Twenty mp3 players are produced in a production run. The probability of producing a defective mp3 player is 3%. What is the expected number of NON-defective mp3 players in the pr
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Question 350161: Twenty mp3 players are produced in a production run. The probability of producing a defective mp3 player is 3%. What is the expected number of NON-defective mp3 players in the production run? What is the probability that at least 17 mp3 players are NON-defective?
Answer by edjones(8007) (Show Source): You can put this solution on YOUR website!
20 * .97 = 19.4 the expected number of NON-defective mp3 players in the production run.
.
Let x=.97 and y=.03
Expand (x+y)^20
x^20+20x^19y+190x^18y^2+1140x^17y^3=.9973 probability that at least 17 mp3 players are NON-defective
.
Ed
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