When circuit boards used in the manufacture of compact disc players are tested, the long-run percentage of defectives is 10%. Let X = the number of defective boards in a random sample of size n = 20, so X~ Bin(20, 0.10). (a) Determine P(XS 2). (b) Determine P(X2 5). (c) Determine P(1 SXS 4). (d) What is the probability that none of the 20 boards is defective? (e) Calculate the expected value and standard deviation of X. E(X) = Ox =

When circuit boards used in the manufacture of compact disc players are tested, the long-run percentage of defectives is 10%. Let X = the number of defective boards in a random sample of size n = 20, so X~ Bin(20, 0.10). (a) Determine P(XS 2). (b) Determine P(X2 5). (c) Determine P(1 SXS 4). (d) What is the probability that none of the 20 boards is defective? (e) Calculate the expected value and standard deviation of X. E(X) = Ox =

Algebra & Trigonometry with Analytic Geometry

13th Edition

ISBN:9781133382119

Author:Swokowski

Publisher:Swokowski

Chapter10: Sequences, Series, And Probability

Section10.8: Probability

Problem 31E

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