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 = 15, so X~ Bin(15, 0.1). (Round your probabilities to three decimal places.) USE SALT (a) Determine P(X ≤ 2). (b) Determine P(X ≥ 5). (c) Determine P(1 ≤ x ≤ 4). (d) What is the probability that none of the 15 boards is defective? (e) Calculate the expected value and standard deviation of X. (Round your standard deviation to two decimal places.) expected value standard deviation boards boards

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 = 15, so X~ Bin(15, 0.1). (Round your probabilities to three decimal places.) USE SALT (a) Determine P(X ≤ 2). (b) Determine P(X ≥ 5). (c) Determine P(1 ≤ x ≤ 4). (d) What is the probability that none of the 15 boards is defective? (e) Calculate the expected value and standard deviation of X. (Round your standard deviation to two decimal places.) expected value standard deviation boards boards

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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