Components have a weight with an expectation of 438 and a standard deviation of 4. (a) What
Question:
(a) What are the expectation and the standard deviation of the sum of the weights of three randomly selected components?
(b) What are the expectation and the standard deviation of the average of the weights of eight randomly selected components?
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a The expectation is 3 438 ...View the full answer
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Jehal Shah
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Related Book For 
Probability And Statistics For Engineers And Scientists
ISBN: 9780495107576
3rd Edition
Authors: Anthony Hayter
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