Suppose you work for the quality control department at Hewlett Packard. You know that ink jet cartridges are sometimes defective. The current defective rate is 8 cartridges per package of 100 (i.e. 0.08) What is the probability of sampling 12 cartridges and finding:
At least 4 are defective:
Exactly 1 is defective:
2 or more, but less than 5 is defective:
These are the main ones I'm unsure on, any help would be greatly appreciated.
3 answers
check the original response
I'm sorry but I just don't understand.
each term is the probability of that specific outcome
n^x d^y means x were not defective and y were defective
... in this problem , x + y = 12
at least 4 defective means the sum of the terms where 4 or more were defective
answers for these three were covered in your 1st posting
n^x d^y means x were not defective and y were defective
... in this problem , x + y = 12
at least 4 defective means the sum of the terms where 4 or more were defective
answers for these three were covered in your 1st posting
8 answers