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When circuit boards used in the manufacture of compact disc players are tested, the long-run percentage of defectives is 4%. Let X = number of defective boards in a random sample of size n = 25 boards. So X ~ Bin(25,0.04)

a. Determine P(X < 1)

b. Determine P(1 < X < 4)

c. Determine P(X > 5)

d. Find the expected number of defective boards or E[X]

e. Find the variance of the number of defective boards or Var[X]

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Statistics and Probability, Statistics

Category:- Statistics and Probability
Reference No.:- M91020126

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