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how to find the sample mean given a confidence interval. Each apple is a green dot our observations are marked purple. Solution for You are given the sample mean and the population standard deviation.
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That does not include the true mean. The formula for confidence interval can be calculated by subtracting and adding the margin of error from and to the sample mean. Then find the row corresponding to df 9.
This is assuming that this is a confidence interval for the true population mean.
The result is called a confidence interval for the population mean When the population standard deviation is known the formula for a confidence interval CI for a population mean is deviation n is the sample size and z represents the appropriate z -value from the standard normal distribution for your desired confidence level. A Use the sample to find the 95 confidence interval of the mean SAR level for all phones given that population standard deviation is s 0337. Then add up all of these numbers to get your total sample variance s2. Assuming the following with a confidence level of 95.
