In a random sample of 678 adult males 20 to 34 years of age, it was determined that 58 of them have hypertension (high blood pressure). Complete parts (a) through (d) below. (a) Obtain a point estimate for the proportion of adult males 20 to 34 years of age who have hypertension. A point estimate for the proportion is 0.086 (Round to three decimal places as needed.) (b) Construct a 95% confidence interval for the proportion of adult males 20 to 34 years of age who have hypertension. Interpret the confidence interval. One can be 95% confident that the proportion of adult males 20 to 34 years old who have hypertension is between 0.065 and 0.107. (Type integers or decimals rounded to three decimal places as needed. Use ascending order.) (c) You wish to conduct your own study to determine the proportion of adult males 20 to 34 years old who have hypertension. What sample size would be needed for the estimate to be within 3 percentage points with 95% confidence if you use the point estimate obtained in part (a)? (Round up to the nearest integer.) (d) You wish to conduct your own study to determine the proportion of adult males 20 to 34 years old who have hypertension. What sample size would be needed for the estimate to be within 3 percentage points with 95% confidence if you don't have a prior estimate? (Round up to the nearest integer.)
In a random sample of 678 adult males 20 to 34 years of age, it was determined that 58 of them have hypertension (high blood pressure). Complete parts (a) through (d) below. (a) Obtain a point estimate for the proportion of adult males 20 to 34 years of age who have hypertension. A point estimate for the proportion is 0.086 (Round to three decimal places as needed.) (b) Construct a 95% confidence interval for the proportion of adult males 20 to 34 years of age who have hypertension. Interpret the confidence interval. One can be 95% confident that the proportion of adult males 20 to 34 years old who have hypertension is between 0.065 and 0.107. (Type integers or decimals rounded to three decimal places as needed. Use ascending order.) (c) You wish to conduct your own study to determine the proportion of adult males 20 to 34 years old who have hypertension. What sample size would be needed for the estimate to be within 3 percentage points with 95% confidence if you use the point estimate obtained in part (a)? (Round up to the nearest integer.) (d) You wish to conduct your own study to determine the proportion of adult males 20 to 34 years old who have hypertension. What sample size would be needed for the estimate to be within 3 percentage points with 95% confidence if you don't have a prior estimate? (Round up to the nearest integer.)
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
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In a random sample of 678 adult males 20 to 34 years of age, it was determined that 58 of them have hypertension (high blood pressure).
Transcribed Image Text:In a random sample of 678 adult males 20 to 34 years of age, it was determined that 58 of them have hypertension (high blood pressure). Complete parts (a) through (d) below.
(a) Obtain a point estimate for the proportion of adult males 20 to 34 years of age who have hypertension.
A point estimate for the proportion is 0.086
(Round to three decimal places as needed.)
(b) Construct a 95% confidence interval for the proportion of adult males 20 to 34 years of age who have hypertension. Interpret the confidence interval.
One can be 95% confident that the proportion of adult males 20 to 34 years old who have hypertension is between 0.065 and 0.107
(Type integers or decimals rounded to three decimal places as needed. Use ascending order.)
(c) You wish to conduct your own study to determine the proportion of adult males 20 to 34 years old who have hypertension. What sample size would be needed for the estimate to
be within 3 percentage points with 95% confidence if you use the point estimate obtained in part (a)?
Round up to the nearest integer.)
(d) You wish to conduct your own study to determine the proportion of adult males 20 to 34 years old who have hypertension. What sample size would be needed for the estimate to
be within 3 percentage points with 95% confidence if you don't have a prior estimate?
(Round up to the nearest
integer.)
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