Replacement times for CD players are normally distributed with a mean of 7.1 years and a standard deviation of 1.4 years (based on data from "Getting Things Fixed," Consumer Reports). Find the probability that 45 randomly selected CD players will have a mean replacement time of 6.8 years or less. If 45 CD players were, in fact, selected randomly from the past sales of E-Electronics Edmonton, and had a mean replacement time of 6.8 years, would it appear that this store has been given CD players with lower than average quality?