The price of a gallon of milk follows a normal distribution with a mean of $3.20 and a standard deviation of $0.10. What proportion of the milk vendors had prices that were less than $3.075 per
Gallon?
A)0.3944
B)0.2112
C)0.8944
D)0.1056

Question

Quizplus · Accepted Answer

To find the proportion of milk vendors with prices less than $3.075, we calculate the z-score: $z = \frac{3.075 - 3.20}{0.10} = -1.25$. Looking up -1.25 in the z-table gives us approximately 0.1056, indicating that about 10.56% of vendors had prices below $3.075.

The Price of a Gallon of Milk Follows a Normal