Calories consumed by members of a track team the day before a race are normally distributed, with a mean of 1,800 calories and a standard deviation of 100 calories. if a normal curve is sketched using these data, what is the range for 3 standard deviations to the right and to the left of the mean?
0–3,600
1,700–1,900
1,600–2,000
1,500–2,100