Sports announcers often say, "I wonder which player will show up to play today." This is the
announcer's way of saying that the player's performance varies dramatically from game to game. Suppose that the standard deviation of the number of points scored by shooting guards in
the NBA is 8.3. A random sample of 25 games played by Derrick Rose results in a sample standard deviation of 6.7 points. Assume that a normal probability plot indicates that the points
scored are approximately normally distributed. Is Derrick Rose more consistent than other shooting guards in the NBA at the a = 0.10 level of significance?