Mathematics
Mathematics, 18.07.2019 13:00, 22savage2017

If is a given sample proportion, n is the sample size, and z is the number of standard deviations at a confidence level, what is the standard error of the proportion?

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Mathematics, 16.07.2019 05:20, ayoismeisalex
Suppose your marketing colleague used a known population mean and standard deviation to compute the standard error as 56.8 for samples of a particular size. you don't know the particular sample size but your colleague told you that the sample size is greater than 60. your boss asks what the standard error would be if you triple the sample size. what is the standard error for the new sample size?
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Mathematics, 03.08.2019 01:30, yasmincastor
You are planning to use a sample proportion to estimate a population proportion, p. a sample size of 100 and a confidence level of 95% yielded a margin of error of 0.025. which of the following will result in a larger margin of error? i: increasing the sample size while keeping the same confidence level ii: decreasing the sample size while keeping the same confidence level iii: increasing the confidence level while keeping the same sample size iv: decreasing the confidence level while keeping the same sample size
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Mathematics, 23.10.2019 22:00, glitch14
In a sample of n 15 lichen specimens, the researchers found the mean and standard deviation of the amount of the radioactive element, cesium-137, that was present to be 0.009 and 0.005 microcurie per illiter, respectively. suppose the researchers want to increase the sample size in order to estimate the mean μ to within 0.001 microcurie per milliliter of its true value, using a 95% confidence interval. complete parts a through c. a. what is the confidence level desired by the researchers? the confidence level is b. what is the sampling error desired by the researchers? the sampling error is c. compute the sample size necessary to obtain the desired estimate. the sample size is(type a whole number.)
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