Anew internet phone company advertises that you can call any country in the world for 3¢ per minute. you regularly call your friend in india and talk to her for 20 minutes. how much would the phone call cost?

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.