Leena knits 10 rows in 12 minutes.
2 answers:
You might be interested in
Answer:
If the lot has 4 defective covers out of 25 total covers, the probability of accepting the lot is P=0.98.
Step-by-step explanation:
We have a population of N=25 skylight covers, were K=4 are defective.
We sample n=5 covers, and we will accept the lot if k=2 or fewer are defective.
We will use the hypergeometric distribution to model this probabilities.
First, to be accepted, the sample can have 2, 1 or 0 defective covers, so the probability of being accepted is:
The probability that there are k defective covers in the sample is:
Then, we can calculate the individual probabilities as:
If we add this probabilities, we have:
If the lot has 4 defective covers out of 25 total covers, the probability of accepting the lot is P=0.98.