Answered: A poll for a statewide election has a…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Similar questions

59% of 81 delegates in a political convention favored changing the rules to restrict the number of potential candidates. What is the 95% confidence interval for the population proportion. Give your answers as decimals, to two places.
Find the sample size, n, needed to estimate the percentage of adults who have consulted fortune tellers. Use a 0.06 margin of error, use confidence level of 90%, and use results from a prior poll suggesting that 14% of adults have consulted fortune tellers. n = (Round up to the nearest integer.)
A polling firm called 1,000 likely voters to ask about their political preferences. Of those polled, 520 indicated that they would vote for the incumbent candidate. Determine the point estimate for the proportion of voters in the election district who will vote for the incumbent. What is the sampling distribution for p in this example? Approximately how many voters must be polled for a margin of error equal to .01, assuming a confidence level of 95%? Show your work.
A poll reported 59% support for a statewide election with a margin of error of 4.37 percentage points. How many voters should be sampled for a 99% confidence interval? Round up to the nearest whole number.
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?
A 95% confidence interval for a population proportion, p, is 0.23 < p < 0.27. What was the sample proportion?
In a recent polI, 480 people were asked if they liked dogs, and 44% said they did. Find the margin of error of this poll, at the 90% confidence level. Give your answer to three decimals
In a recent poll, 480 people were asked if they liked dogs, and 82% said they did. Find the margin of error of this poll, at the 90% confidence level. Give your answer to three decimals Submit Question Chp %24 96 %24 %23
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?
Find the sample size, n, needed to estimate the percentage of adults who have consulted fortune tellers. Use a 0.09 margin of error, use a confidence level of 98%, and use results from a prior poll suggesting that 18% of adults have consulted fortune tellers. n=
A poll for a statewide election has a margin of error of 2.88 percentage points. How many voters should be sampled for a 90% confidence interval? Round up to the nearest whole number. _____ voters

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A poll for a statewide election has a margin of error of 2.14 percentage points. How many voters should be sampled for a 99% confidence interval?