In: Statistics and Probability
A sample of 4 different calculators is randomly selected from a group containing 18 that are defective and 33 that have no defects. What is the probability that at least one of the calculators is defective?
Given,
4 different calculator is randomly selected 18 are defective and 33 that have no defective
Let,
X represent the number of defective calculators
The follows a hypergeometric distribution.
Here we use hypergeometric probability mass function
Answer: