Answer:
a) 20 samples contains exactly 3 quarts of spoiled milk.
b) 2280 contains at most 2quarts of spoiled milk .
Step-by-step explanation:
see attachment for explanation.
x1 = 0.5 x2 = -0.4 y1 = 1.3 y2 = -1.3
=2.75
I think it would be A