A local non-profit group would like to estimate the proportion of residents of Okeechobee county who do not have health insurance. Determine the most conservative sample size required to limit the margin of error to within 0.042 of the population proportion for a 97% confidence interval. Round the solution up to the nearest whole number. n=

A local non-profit group would like to estimate the proportion of residents of Okeechobee county who do not have health insurance. Determine the most conservative sample size required to limit the margin of error to within 0.042 of the population proportion for a 97% confidence interval. Round the solution up to the nearest whole number. n=

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

32. Touch Your Nose With Your Tongue Find the sample size needed to estimate the percentage of adults who can touch their nose with their tongue. Use a margin of error of 2 percentage points and use a confidence level of 90%. a. Assume that p and à are unknown. b. Assume that a previous study showed that 10% of adults can touch their nose with their tongue (based on data from Onedio). c. Does the use of the results from the previous study have much of an effect on the sample size?
The Labor Bureau wants to estimate, at a 90% confidence level, the proportion of all households that receive welfare. A preliminary sample showed that 19.5% of households in this sample receive welfare. The sample size that would limit the margin of error to be within 0.022 of the population proportion is:
Assume that a sample is used to estimate a population proportion p. Find the margin of error M.E. that corresponds to a sample of size 234 with 29.1% successes at a confidence level of 95%.
Suppose a 90 percent confidence interval to estimate a population proportion was calculated from a sample proportion of 18 percent and a margin of error of 4 percent. What is the width of the confidence interval?
We want to estimate the proportion of cities that have private refuse collectors. We want to estimate the population proportion with a margin of error of 0.10, with a confidence level of 90%, with a prior population proportion of 40%. What is the required sample size?
An educator wants to construct a 99% confidence interval for the proportion of elementary school children in Michigan who are proficient in reading. Estimate the sample size needed to conduct this survey and assume that there there is no information available to be used from a previous study. Use a margin of error of 3%. What is the sample size: _________
A consumer agency wants to estimate the proportion of all drivers who wear seat belts while driving. What is the most conservative estimate of the sample size that would limit the margin of error to within 0.49 of the population proportion for a 99% confidence interval? Round your answer up to the nearest whole number. n =
Assume that a sample is used to estimate a population proportion p. Find the 99.5% confidence interval for a sample size of 201 with 85 percent success rate.
An epidemiologist is worried about the prevalence of the flu in East Vancouver and the potential shortage of vaccines for the area. She will need to provide a recommendation for how to allocate the vaccines appropriately across the city. She takes a simple random sample of 332 people living in East Vancouver and finds that 36 have recently had the flu. Suppose that the epidemiologist wants to re-estimate the population proportion and wishes for her 95% confidence interval to have a margin of error no larger than 0.04. How large a sample should she take to achieve this? Please carry answers to at least six decimal places in intermediate steps, and use at least 3 decimal places in your critical value. Sample size =
The president’s policy on domestic affairs received a 45% approval rating in a recent poll. The margin of error was given as 0.035. What sample size was used for this poll if we assume a 95% confidence level?
Use a 0.05 margin of error and use a confidence level of 99%. Complete parts (a) through (c) below.