HW5_SLN

# HW5_SLN - EMIS 7370/5370 & STAT 5340 Homework 5 (a) Parts A...

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Homework 5 (a) Parts A batch of tubing contains 100 parts from a local supplier and 200 parts from a supplier in the next state. (1) If 4 parts are selected randomly, what is the probability they are from the local supplier? (2) What is the probability that at least one part in the sample is from the local supplier? (3) What is the mean and standard deviation of the number of parts from the local supplier?

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Homework 5 (1) If 4 parts are selected randomly, what is the probability they are from the local supplier? Let X equal the number of parts in the sample from the local supplier. Then, X has a hypergeometric distribution and the requested probability is P(X=4). Consequently, 0119 . 0 4 300 0 200 4 100 ) 4 ( = = = X P
Homework 5 (2) What is the probability that at least one part in the sample is from the local supplier? 804

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## This note was uploaded on 10/06/2008 for the course EMIS 5370/7370 taught by Professor Dr.stracer during the Spring '08 term at SMU.

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HW5_SLN - EMIS 7370/5370 & STAT 5340 Homework 5 (a) Parts A...

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