02-05-2014, 05:32 PM
a) A batch of 10 gaskets contains 4 defective gaskets. If we draw samples of size 3 without replacement, from the batch of 10, find the probability that a sample contains 2 defective gaskets.
Solution
A batch of 10 rocker cover gaskets contains 4 defective gaskets. If we draw samples
of size 3 without replacement, from the batch of 10, find the probability
that a sample contains 2 defective gaskets.
1.jpg (Size: 21.05 KB / Downloads: 1,429)
It is possible to derive formulae for the mean and variance of the Hypergeometric distribution.
However, the calculations are more difficult than their Binomial counterparts, so we will simple
state the results.
Solution
A batch of 10 rocker cover gaskets contains 4 defective gaskets. If we draw samples
of size 3 without replacement, from the batch of 10, find the probability
that a sample contains 2 defective gaskets.
1.jpg (Size: 21.05 KB / Downloads: 1,429)
It is possible to derive formulae for the mean and variance of the Hypergeometric distribution.
However, the calculations are more difficult than their Binomial counterparts, so we will simple
state the results.