Suppose that, on average, 2 people in 1000 makes a numerical error in preparing his or her income tax return. If 6000 returns are selected at random and examined, find the probability that 12, 13, 14, or 15 of them contain an error.

25 of 30 The following graph shows the mean change in mass of two groups of animals fed on different diets over a period of 2 years: Time course of mass change 275 250 225 200 175 150 125 100 0 3 69 12 15 18 21 24 Time (months) Which of these is the most misleading property of this graph? OThe errors vary between data points. O A best fit curve wasn't shown The interpolating lines have different styles. False zero None of these is relevant to this graph. Mass (g) HH H HH HH HH