<span>When order does not matter you use what is called n choose k formula
n!/(k!(n-k)!) where n is the number of things to choose from and k is the number of choices made, in this case:
20!/(4!(20-4)!)=4845</span>
Since there is a 95% chance that you get two printers right, then you simply square the decimal equivalent which is .95 (Hence, you do .95^2). You will get .9025 (or 90.25%).
For letter b, you simply subtract .9025 from 1.
ans = 1-.9025
ans = .0975 (or 9.75%)
So the answer to B) would be there is a 9.75% chance the probability of a shipment can be rejected.
Answer:
1.33333333333
Step-by-step explanation:
Answer:
B. and E.
Step-by-step explanation:
