The number of bags of chips sold in a month is tracked and follows a normal distribution. After 2 years the mean is found to be 2.4 million, with a standard deviation of 0.3 million. | What is the chance (percentage) that between 1.8 and 2.1 million bags are sold on a random month? (3 points: 1 for shown work, 1 for correct drawing, 1 for correct answer)