You want to obtain a sample to estimate a population proportion. Based on previousevidence, you believe the population proportion is approximatelyp*would like to be 99% confident that your esimate is within 4% of the true populationproportion. How large of a sample size is required?88 % . YouDo not round mid-calculation. However, use a critical value accurate to threedecimal places.Submit Question

It is given that Population proportion p ≈ 0.88 Margin of error E = 4% = 0.04 The critical value of…

Answered: You want to obtain a sample to estimate…

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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The estimate of the population proportion should be within plus or minus .05, with a 95% level of confidence. The best estimate of the population proportion is 15. How large a sample is required? (Use z Distribution Table) ( Round z-value to 2 decimal places and round up your answer to the next whole number) What is the sample size?
What sample size is needed to give a margin of error within ±2% in estimating a population proportion with 99% confidence? An initial small sample has p^=0.79. Round your answer up to the nearest integer. Sample size = Enter your answer in accordance to the question statement
you want to obtain a sample to esimate a population proportion. Based on previous evidence, you believe the population standard devition is approximately 65.5. You would like to be 99% confident that your estimate is within 1 of the true population mean. How large of a sample size is required? Do not round mid calculation. Use a critical value rounded to three decimal places.
In order to estimate the mean amount of time computer users spend on the internet each month, how many computer users must be surveyed in order to be 90% confident that your sample mean is within 14 minutes of the population mean? Assume that the standard deviation of the population of monthly time spent on the internet is 213 min. What is a major obstacle to getting a good estimate of the population mean? Use technology to find the estimated minimum required sample size. 1. The minimum sample size required is how many computer users? 2. What is a major obstacle to getting a good estimate of the population mean?
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#. Thefinancial aid office wishes to estimate the mean cost of textbooks per quarter forstudents at a particular university. For the estimate to be useful,it should be within$20 of the true population mean. How large a sample should be used to be 95% con-fident of achieving this level of accuracy?To determine the required sample size,we must have a value for s. The finan-cial aid office is pretty sure that the amount spent on books varies widely,with mostvalues between $50 and $450
You want to obtain a sample to estimate a population proportion. Based on previous evidence, you believe the population proportion is approximately p^∗=85%. You would like to be 99% confident that your estimate is within 3% of the true population proportion. How large of a sample size is required? Do not round mid-calculation. However, use a critical value accurate to three decimal places.
You want to obtain a sample to estimate the percentage of college students who plan to vote in an upcoming election. At this point in time, you have no reasonable estimate for the population proportion. You would like to be 98% confident that you estimate is within 5% of the true population proportion. How large of a sample size is required?Do not round mid-calculation. However, use a critical value accurate to three decimal places. n=
Inspection of a random sample of 27 aircraft showed that 16 needed repairs to fix a wiring problem that might compromise safety. (a) How large a sample would be needed to estimate the true proportion of jets with the wiring problem, with 98 percent confidence and an error of ± 8 percent? (Enter your answer as a whole number (no decimals). Use a z-value taken to 3 decimal places in your calculations.) Sample size __________ (b) Would the airline actually conduct further sampling, or just inspect all the planes? Conduct further sampling Inspect all the planes
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You work for a marketing firm that has a large client in the automobile industry. You have been asked to estimate the proportion of households in Chicago that have two or more vehicles. You have been assigned to gather a random sample that could be used to estimate this proportion to within a 0.015 margin of error at a 95% level of confidence. a) With no prior research, what sample size should you gather in order to obtain a 0.015 margin of error? Round your answer up to the nearest whole number. n = (answer here) households b) Your firm has decided that your plan is too expensive, and they wish to reduce the sample size required. You conduct a small preliminary sample, and you obtain a sample proportion of ˆp=0.19p^=0.19 . Using this new information. what sample size should you gather in order to obtain a 0.015 margin of error? Round your answer up to the nearest whole number. n = (answer here) households

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You want to obtain a sample to estimate a population proportion. Based on previous evidence, you believe the population proportion is approximately p* would like to be 99% confident that your esimate is within 4% of the true population proportion. How large of a sample size is required? 88 % . You