Answered: 1 By how many times does the sample…

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

Data from a representative sample were used to estimate that 33% of all computer users in a recent year had tried to get on a Wi-Fi network that was not their own in order to save money. You decide to conduct a survey to estimate this proportion for the current year. What is the required sample size if you want to estimate this proportion with a margin of error of 0.04? Calculate the required sample size first using 0.33 as a preliminary estimate of p. (Round your answer up to the nearest integer.) The sample size of _____ should be used for this study because it will guarantee a margin of error of no greater than 0.04. The other sample size computed will only guarantee a margin of error no greater than 0.04 if p < _____ or if p > ______ .
You want to obtain a sample to estimate a population proportion. Based on previous evidence, you believe the population proportion is approximately 10%. You would like to be 95% 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.
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 4% of the true population proportion. How large of a sample size is required?
The standard error of the sample mean is proportional to the square root of the sample size? true or false
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?
What happens to the t-distribution as the sample size increases?
When computing the variance using a sample of size n = 30, we divide the sum of squared deviations by Give your answer as a whole number.
You want to obtain a sample to estimate the proportion of a population that possess a particular genetic marker. Based on previous evidence, you believe approximately P∗=15% of the population have the genetic marker. You would like to be 98% confident that your estimate is within 3% of the true population proportion. How large of a sample size is required?n =
You want to obtain a sample to estimate a population proportion. At this point in time, you have no reasonable estimation for the population proportion. You would like to be 99.9% confident that you estimate is within 0.1% of the true population proportion. How large of a sample size is required?
Statistical tests are more accurate if there is a sample size of n > 30. how will a sample size of n = 20 effect the results of a test?

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1 By how many times does the sample size have to be increased to decrease the margin of error by a factor of -? ... 1 to decrease the margin of error by a factor of The sample size must be increased by a factor of (Type a whole number.)