Question

Calories consumed by members of a track team the day before a race are normally distributed, with a mean of 1,700 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?

1,400–2,000
0–3,500
1,600–1,800
1,500–1,900

Answer 1

Aaaaaaaaaaaaaa is right

Answer 2

Option A is right.

Given that:

Mean = 1700

Standard deviation = 100

So, the range for 3 standard deviations to the right and to the left of the mean is:

Explanation: