Chapter 5

You'll need to use the normal table do these problems - Click here to view the normal table

The blood pressure in millimeters was measured for a large sample of people. The average pressure is 140 mm, and the SD of the measurements is 20 mm. The histogram looks reasonably like a normal curve. Use the normal curve to estimate the following percentages. Choose the answer that is closest to being correct.

A 36.4%

B 86.4%

C 72.8%

D 13.6%

E 68.27%

The percentage of people with blood pressure between 118 and 162 mm.

The percentage of people with blood pressure between 140 and 162 mm.

The percentage of people with blood pressure over 162 mm.