Point Estimate ± Margin of Error
Let’s assume the population standard deviation is 4. For a 95% CI for the mean find the minimum sample size such that the margin of error is 1.5.
Point Estimate ± Margin of Error Let’s assume the population standard deviation is 4. For a...
Use the given margin of error, confidence level, and population standard deviation, sigmaσ, to find the minimum sample size required to estimate an unknown population mean, muμ. Margin of error: 1.91.9 inches, confidence level: 9595%, sigmaσequals=2.62.6 inches A confidence level of 9595% requires a mimimum sample size of nothing. (Round up to the nearest integer.)
To estimate the mean of a normal population whose standard deviation is 36, with a margin of error equal to 3 and confidence level 95% requires a sample size of at least (report your answer in integers)
Assume that you want to construct a 95% confidence interval estimate of a population mean. Find an estimate of the sample size needed to obtain the specified margin of error for the 95% confidence interval. The sample standard deviation is given below. Margin of error equals$5, standard deviation equals$19 The required sample size is __.
Assume the population standard deviation is 45 minutes.
Find (a) the point estimate of the population mean μ mu and
(b) the margin of error for a 90% confidence interval, and
(c) construct a 90% confidence interval for the population mean.
Pb Concentration Values (ppm)
Pb Concentration Values (ppm) 135 145 95 140 135 95 110 50 90 165 110 125 80 125 130 110 25 7565 100 60 125 115 135 9590 14040 75 50130 85 100 160 135...
Assume that you want to construct a 95% confidence interval estimate of a population mean. Find an estimate of the sample size needed to obtain the specified margin of error for the 95% confidence interval. The sample standard deviation is given below. Margin of error =$5,standard deviation=$25 The required sample size is ????? (Round up to the nearest whole number as needed.)
Assume that a sample is used to estimate a population mean μ . Find the margin of error M.E. that corresponds to a sample of size 7 with a mean of 49.5 and a standard deviation of 6.3 at a confidence level of 90%.
Assume that you want to construct a 95% confidence interval estimate of a population mean. Find an estimate of the sample size needed to obtain the specified margin of error for the 95% confidence interval. The sample standard deviation is given below. Margin of error equals=$66, standard deviation equals=$2222 The required sample size is _____. (Round up to the nearest whole number as needed.)
Point Estimate ± Margin of Error For a 90% CI for the proportion find the minimum sample size such that the margin of error is .10 . (Must find a sample size that works for all possible values of 0<pˆ<1.)
4) Assime that a sample is used to estimate a population mean. Us a confidence level of 95%, a sample size of 60, sample mean of 5.4, and sample standard deviation of 0.93 to find the margin of error. Assume that the sample is a simple random sample and the population has a normal distribution. Round your answer to one more decimal place that the sample standard deviation.
Assume that you want to construct a 95% confidence interval estimate of a population mean. Find an estimate of the sample size needed to obtain the specified margin of error for the 95% confidence interval. The sample standard deviation is given below. Margin of errorequals $3, standard deviationequals $23 The required sample size is nothing . (Round up to the nearest whole number as needed.)