Find the variance of the following data: 10, 16, 7, 9, 4, 15, 7, 11, 9, 12, 16, 8, 6, 8, 12 A. 12.0
B. 1.88
C. 12.4
D. 3.52

(thank you for helping <3)

Suppose that prices of a gallon of milk at various stores in one town have a mean of $3.71 with a standard deviation of $0.10. using chebyshev's theorem, what is the minimum percentage of stores that sell a gallon of milk for between $3.41 and $4.01? round your answer to one decimal place.