Question:
For the following exercise, determine the range (possible values) of the random variable. A batch of 500 machined parts contains 10 that do not conform to customer requirements. Parts are selected successively, without replacement, until a nonconforming part is obtained. The random variable is the number of parts selected.
Answer:
Possible values are all integers from 1 to 491.
{1,2,...........491}
Step-by-step explanation:
Given:
Total number of machined parts = 500
Number that do not conform to customers requirements = 10
Number that conforms to customers requirements = 500 - 10 = 490
Since, parts are selected successively, without replacement, until a nonconforming part is obtained, the range of the random variable (number of parts selected) here will be all integers from 1 to 491 ie {1,2,...........,491}.
Here, we have a total of 490 conforming parts, and 10 non conforming parts, there must be a non-conforming part among 491 selections, considering the fact that total number of parts are 500
