You Discuss it! Elana conducts an experiment in which she fills up gas tank on her Toyota Camry 40 times and records the miles per gallon for each fill-up. A histogram of the miles per gallon points out that the normal distribution with mean of 24.6 miles per gallon and standard deviation of 3.2 miler per gallon could be employed to model the gas mileage for her car.
a) The figure represents normal curve with m=24.6 miles per gallon and s=3.2 miles per gallon. The area under the curve to the right of x=26 is 0.3309. Give two interpretations of this area.
b) The figure at the top of the next column represents the normal curve with m=24.6 miles per gallon and s=3.2 miles per gallon. The area under the curve is between x=18 and x=21 is 0.1107. Provide two interpretations of this area.