(6 points) A box contains 58 light bulbs of which 12 are defective and 46 are...
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(6 points) A box contains 58 light bulbs of which 12 are defective and 46 are not. A Quality Control Inspector randomly samples 9 bulbs without replacement. Part A - Calculate the following probabilities. Express the probabilities in a fraction or round it to 5 decimal places. (1) All of the light bulbs are not defective in the sample. (2) At most 4 light bulbs are defective in the sample. (3) At least 3 light bulbs are defective in the sample. Part B Let X be the number of light bulbs that are defective in the sample. (1) Calculate the expected value of X. (2) Calculate the standard deviation of X (6 points) A box contains 58 light bulbs of which 12 are defective and 46 are not. A Quality Control Inspector randomly samples 9 bulbs without replacement. Part A - Calculate the following probabilities. Express the probabilities in a fraction or round it to 5 decimal places. (1) All of the light bulbs are not defective in the sample. (2) At most 4 light bulbs are defective in the sample. (3) At least 3 light bulbs are defective in the sample. Part B Let X be the number of light bulbs that are defective in the sample. (1) Calculate the expected value of X. (2) Calculate the standard deviation of X
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Related Book For
Income Tax Fundamentals 2013
ISBN: 9781285586618
31st Edition
Authors: Gerald E. Whittenburg, Martha Altus Buller, Steven L Gill
Posted Date:
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