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8.4.37 you want bobe 95% confde t ofesi ating the populair proportion to with n a...
If you want to be 95% confident of estimating the population proportion to within a sampling error of plus or minus0.05 and there is historical evidence that the population proportion is approximately 0.46, what sample size is needed?
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 0.36, what sample size needed? A sample size of is needed. Round up to the nearest integer.)
If you want t be 95% confident of estimating the population proportion to within sampling error of +/- 0.02 and there is historical evidence that the population proportion is approximately 0.42, what sample size is needed?
If you want to be 95% confident of estimating the population proportion to within a sampling error of ±0.06 and there is historical evidence that the population proportion is approximately .40, what sample size is needed?
A) If you want to be 95% confident of estimating the population mean to within a sampling error of plus or minus 2 and the standard deviation is assumed to be 16, what sample size is required? The sample size required is _____ (Round up to the nearest integer.) B) If you want to be 95% confident of estimating the population proportion to within a sampling error of plus or minus 0.06, what sample size is needed? A sample size...
lf you want to be 95% confident of estimating the population mean to thin a samping error of ±4 and the standard deviat on s assumed to be 9, what sample si es quired The sample size required is (Round up to the nearest integer.)
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If X= 101, σ= 6, and n = 69, construct a 95% confidence interval estimate of the population mean, μ. (Round to two decimal places as needed.) lf you want to be 95% confident o estimating he population mean o within a samping error o ± 3 and the standard deviation s assumed to be 12 at sample Size required The sample size required is (Round up to the nearest integer.)
If you want to be 95% confident of estimating the population mean to within a sampling error of + or - 25 and the standard deviation is assumed to be 100, what sample size is required? The sample size required is _______. (Round up to the nearest integer.)
a. Assume that a sample is used to estimate a population proportion p. Find the 95% confidence interval for a sample of size 198 with 42 successes. Enter your answer as an open-interval (i.e., parentheses) using decimals (not percents) accurate to three decimal places. 95% C.I. = b. A political candidate has asked you to conduct a poll to determine what percentage of people support her. If the candidate only wants a 0.5% margin of error at a 99% confidence...
6.3.20-T Question Help A researcher wishes to estimate, with 95% confidence, the population proportion of motor vehicle fatalities that were caused by alcohol-impaired driving. His estimate must be accurate within 2% of the population proportion (a) No preliminary estimate is available. Find the minimum sample size needed. (b) Find the minimum sample size needed, using a prior study that found that 36% of motor vehicle fatalities that were caused by alcohol-impaired driving. (c) Compare the results from parts (a) and...