If you want to be 95% confident of estimating the population proportion to within a sampling error of +0.05 and there is historical evidence that the population proportion is approximately 0.44, whatsample size is needed?A sample size of is needed.(Round up to the nearest integer.)anonon(STAT

Given,sample proportion(p^)=0.44margin of error(E)=0.05α=1-0.95=0.05α2=0.025Z0.025=1.96 (from…

Answered: f you want to be 95% confident of…

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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For this problem, carry at least four digits after the decimal in your calculations. Answers may vary slightly due to rounding. How hard is it to reach a businessperson by phone? Let p be the proportion of calls to businesspeople for which the caller reaches the person being called on the first try. LAUSE SALT (a) If you have no preliminary estimate for p, how many business phone calls should you include in a random sample to be 80% sure that the point estimate p will be within distance of 0.07 from p? (Round your answer up to the nearest whole number.) phone calls (b) A report states that businesspeople can be reached by a single phone call approximately 23% of the time. Using this (national) estimate for p, answer part (a). (Round your answer up to the nearest whole number.) phone calls
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You want to obtain a sample to estimate a population proportion. At this point in time, you have no reasonable estimate for the population proportion. You would like to be 99.5% confident that your estimate is within 5% of the true population proportion. How large of a sample size is required? n= Do not round mid-calculation. However, use of a critical value rounded to three decimal places will suffice.
You want to obtain a sample to estimate a population proportion. Based on previous evidence, you believe the population proportion is approximately 33%. You would like to be 90% confident that your estimate is within 1% of the true population proportion. How large of a sample size is required? Hint: Video [+] n =
You want to obtain a sample to estimate a population proportion. At this point in time, you have no reasonable estimate for the population proportion. You would like to be 95% confident that your estimate is within 1.5% of the true population proportion. How large of a sample size is required?n = Do not round mid-calculation. However, use of a critical value rounded to three decimal places will suffice.
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If you want to be 99% confident of estimating the population proportion to within a sampling error of ±0.05 and there is historical evidence that the population proportion is approximately 0.43, what sample size is needed? A sample size of is needed. (Round up to the nearest integer.)
What sample size is needed to give a margin of error within +1 in estimating a population mean with 99% confidence, assuming a previous sample had s = 2.9. Round your answer up to the nearest integer. sample size=
If you want to be 99% confident of estimating the population proportion to within a sampling error of ±0.05 and there is historical evidence that the population proportion is approximately 0.45, what sample size is needed?
You want to obtain a sample to estimate a population proportion. At this point in time, you have no reasonable preliminary estimation for the population proportion. You would like to be 90% confident that you estimate is within 2% of the true population proportion. How large of a sample size is required? Hint: Video [+] n = 1692 Enter an integer or decimal number [more..] Submit Question
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You want to obtain a sample to esimate a population proportion. Based on previous evidence you believe the population proportion is approximately p*=21%. You would loke to be 99.9% confident that you estomate within 1% of the true population proportion. How large of a sample size is required?

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f you want to be 95% confident of estimating the population proportion to within a sampling error of +0.05 and there is historical evidence that the population proportion is approximalely U.44, WH sample size is needed? A sample size of is needed. (Round up to the nearest integer.)