Sample Mean Confidence Interval

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Sample Mean Confidence Interval. We measure the heights of 40 . The interval estimate gives an indication of .

Confidence Intervals Sample Mean from sciences.usca.edu

For a population with unknown mean and known standard deviation , a confidence interval for the population mean, based on a simple random sample (srs) of size n . To construct a confidence interval for a sample mean, we need to know the variability of the sample mean. A confidence interval is the mean of your estimate plus and minus the variation in .

If a series of samples are drawn and the mean of each calculated, 95% of the means .

Instead of a single number for the mean, a confidence interval gives you a . If a series of samples are drawn and the mean of each calculated, 95% of the means . Strictly speaking a 95% confidence interval means that if we were to take 100 different samples and compute a 95% confidence interval for each sample, . This means we need to know how to compute the .