If a 1-gallon can of paint covers on the average 513.3 square feet with a standard deviation of 31.5 square feet, a. what is the probability that the sampling distribution covered by a sample of 40 of these 1-gallon cans will be anywhere from 510.0 to 520.0 square feet? b. If the mean of these samples turned out to be 500.0, do you believe these samples actually came from a population having a u = 513.3 and a o = 31.5? a ? Explain your answer. = =