Ahn has two jars of marbles. The first has a white, blue, and green marble. The second jar has a green, red, purple, and black marble. He randomly chooses one marble from each jar. What is the probability he chooses two green marbles?

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.