For a large sample of blood pressure values, the mean is 120 and the standard deviation is 10. Assuming a bell-shaped curve, which interval is likely to be about the interval from the minimum to maximum blood pressures in the sample?
A) 120 to 150
B) 110 to 130
C) 90 to 150
D) 50 to 190

Question

Quizplus · Accepted Answer

The interval from 90 to 150 covers three standard deviations on either side of the mean (120), which is typical for a bell-shaped curve (normal distribution) to encompass most data points.

For a Large Sample of Blood Pressure Values, the Mean