A certain car model has a mean gas mileage of 27 miles per gallon (mpg) with a standard deviation A pizza delivery company buys 56 of these cars. What is the probability that the average mileage of the fleet is between 26.8 and

He ! a group of farmers planned to clean 80 acres of wheat per day to finish the work on schedule. right before the work started, they received a new piece of machinery that them clean 10 more acres per day than originally planned. as a result of increased productivity in the last day before the deadline they only had to clean 30 acres. how many acres of wheat did the group of farmers have to clean?