Blood pressure:High blood pressure has been identified as a risk factor for heart attacks and strokes. The proportion of U.S. adults with high blood pressure is0.3

. A sample of31

U.S. adults is chosen. Use the TI-84 Plus Calculator as needed. Round the answer to at least four decimal places.

Part 1 of 5

Is it appropriate to use the normal approximation to find the probability that more than

47

%

of the people in the sample have high blood pressure?It

is not

appropriate to use the normal curve, since=

np

9.3

<

10

and=

n

1

p

21.7

10

.

Part:1 / 5

1 of 5 Parts Complete

Part 2 of 5

A new sample of83

adults is drawn. Find the probability that more than41

%

of the people in this sample have high blood pressure.The probability that more than41

%

of the people in this sample have high blood pressure is0.0144

.

Part:2 / 5

2 of 5 Parts Complete

Part 3 of 5

Find the probability that the proportion of individuals in the sample of83

who have high blood pressure is between0.20

and0.32

.The probability that the proportion of individuals in the sample of83

who have high blood pressure is between0.20

and0.32

is

.