HW5_SLN

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

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EMIS 7370/5370 & STAT 5340 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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EMIS 7370/5370 & STAT 5340 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
EMIS 7370/5370 & STAT 5340 Homework 5 (2) What is the probability that at least one part in the sample is from the local supplier?

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