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) 0.8?
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) 0.8?
any hints would be helpful.
Assume selection without replacement.
where we take a saple of size N
So is the same as
Now construct a table of for and find the smallest such that .