The number of gallons of paint that Home Depot sells in a given day is normally distributed with a mean of 175 gallons and a standard deviation of 40 gallons (I realize that the distribution is probably different for weekends compared to weekdays, but just assume everyday has the distribution). In a sample of 126 days, what is the probability that the average number of gallons sold will be 170 or less? (please round your answer to 4 decimal places)