Solution Found!
A shipment of 20 cameras includes 3 that are defective.
Chapter 3, Problem 108E(choose chapter or problem)
Problem 108E
A shipment of 20 cameras includes 3 that are defective. What is the minimum number of cameras that must be selected if we require that P(at least 1 defective) ≥ .8?
Questions & Answers
QUESTION:
Problem 108E
A shipment of 20 cameras includes 3 that are defective. What is the minimum number of cameras that must be selected if we require that P(at least 1 defective) ≥ .8?
ANSWER:
Answer:
Step 1 of 1:
In this question, we need to find the minimum number of cameras that must be selected if we require that
We can write above probability like this,
…….(1)
Let is defined as a number of defective cameras.
Here, random variable follows a hypergeometric distribution, because we are selecting cameras from twenty cameras of which some are defectives and some are non-defectives.