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2) 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 is 0.3. A sample of 81 U.S. adults is chosen. a) What is the sampling distribution of ? b) Find the probability that the proportion of individuals in the sample who have high blood pressure is between 0.24 and 0.35. c) Find the probability that less than 26% of the people in the sample have high blood pressure. d) Find the probability that more than 28% of the people in the sample have high blood pressure. e) Would it be unusual if more than 31% of the individuals in the sample of 81 had high blood pressure? Explain.

2) 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 is 0.3. A sample of 81 U.S. adults is chosen. a) What is the sampling distribution of ? b) Find the probability that the proportion of individuals in the sample who have high blood pressure is between 0.24 and 0.35. c) Find the probability that less than 26% of the people in the sample have high blood pressure. d) Find the probability that more than 28% of the people in the sample have high blood pressure. e) Would it be unusual if more than 31% of the individuals in the sample of 81 had high blood pressure? Explain.

Holt Mcdougal Larson Pre-algebra: Student Edition 2012
Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter6: Ratio, Proportion, And Probability
Section6.7: Probability And Odds
Problem 2E
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2) 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 is 0.3. A sample of 81 U.S. adults is chosen. a) What is the sampling distribution of ? p° b) Find the probability that the proportion of individuals in the sample who have high blood pressure is between 0.24 and 0.35. c) Find the probability that less than 26% of the people in the sample have high blood pressure. d) Find the probability that more than 28% of the people in the sample have high blood pressure. e) Would it be unusual if more than 31% of the individuals in the sample of 81 had high blood pressure? Explain.
Transcribed Image Text:2) 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 is 0.3. A sample of 81 U.S. adults is chosen. a) What is the sampling distribution of ? p° b) Find the probability that the proportion of individuals in the sample who have high blood pressure is between 0.24 and 0.35. c) Find the probability that less than 26% of the people in the sample have high blood pressure. d) Find the probability that more than 28% of the people in the sample have high blood pressure. e) Would it be unusual if more than 31% of the individuals in the sample of 81 had high blood pressure? Explain.
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