Determining Sample Size. In Exercises 31–38, use the given data to find the minimum sample size required to estimate a population proportion or percentage. Women Who Give Birth An epidemiologist plans to conduct a survey to estimate the percentage of women who give birth. How many women must be surveyed in order to be 99% confident that the estimated percentage is in error by no more than two percentage points? a. Assume that nothing is known about the percentage to be estimated. b. Assume that a prior study conducted by the U.S. Census Bureau showed that 82% of women give birth. c. What is wrong with surveying randomly selected adult women?
Determining Sample Size. In Exercises 31–38, use the given data to find the minimum sample size required to estimate a population proportion or percentage. Women Who Give Birth An epidemiologist plans to conduct a survey to estimate the percentage of women who give birth. How many women must be surveyed in order to be 99% confident that the estimated percentage is in error by no more than two percentage points? a. Assume that nothing is known about the percentage to be estimated. b. Assume that a prior study conducted by the U.S. Census Bureau showed that 82% of women give birth. c. What is wrong with surveying randomly selected adult women?
Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter11: Data Analysis And Probability
Section11.4: Collecting Data
Problem 4E
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Determining
Women Who Give Birth An epidemiologist plans to conduct a survey to estimate the percentage of women who give birth. How many women must be surveyed in order to be 99% confident that the estimated percentage is in error by no more than two percentage points?
a. Assume that nothing is known about the percentage to be estimated.
b. Assume that a prior study conducted by the U.S. Census Bureau showed that 82% of women give birth.
c. What is wrong with surveying randomly selected adult women?
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