Statistics
posted by Statistics .
A study found that 82% of elementary students buy lunch at school at least once a month. How large a sample would be necessary to estimate the true proportion within four percentage points with 95% confidence
Respond to this Question
Similar Questions

statistics
How large a sample should be surveyed to estimate the true proportion of college students who do laundry once a week within 3% with 95% confidence? 
Stat Help
A researcher wishes to be 95% confident that her estimate of the true proportion of individuals who travel overseas is within 4% if the true proportion. Find the sample necessary if in a prior study, a sample of 200 people showed that … 
Statistics
An investigator wants to estimate caffeine consumption in high school students. How many students would be required to ensure that a 95% confidence interval estimate for the mean caffeine intake is within 15mg of the true mean? 
Elementary Statistics
1) Construct a confidence interval of the population proportion at the given level of confidence. x=60,n=300, 99% confidence. The 99% confidence interval is (_,_) 2) A researcher wishes to estimate the proportion of adults who have … 
statistics
2. An investigator wants to estimate caffeine consumption in high school students. How many students would be required to estimate the proportion of students who consume coffee? 
Statistics
Suppose the U.S. president wants an estimate of the proportion of the population who support his current policy toward revisions in the Social Security system. The president wants the estimate to be within 0.028 of the true proportion. … 
statistics
John Davis, a manager of a supermarket, wants to estimate the proportion of customers that will be using food stamps at his store. How large a sample is required to estimate the true proportion to within 3% with 98% confidence? 
statistics
An investigator wants to estimate caffeine consumption in high school students. How many students would be required to estimate the proportion of students who consume coffee? 
Introduction to statistics
A researcher would like to estimate the population proportion of adults living in a certain town who have at least a high school education. No information is available about its value. How large a sample size is needed to estimate … 
mpc
A reasearcher wishes to be 95% confident that her estimate of the proportion of two individuals who travel over sea is within 4% of the true proportion. Find the sample necessary if in a prior study a sample of 200 people showed that …