Determine The Minimum Required Sample Size If You Want To Be 95 Confident. Determine the minimum required sample size if you want to be 95 confident that the. Determine the minimum required sample size if you want to be 95 confident that the sample mean is within one unit of the population mean given the standard deviation 48.
Most people use 196 for a 95 confidence interval. In this formula MOE is the number representing the margin of error you want and z is the z -value corresponding to your desired confidence level from the below table. Assume a population standard deviation of 755 in a normally distributed population.
For example allowing 1 defect in the sample will require a sample size of 93 for the 95 reliability statement.
Assume that the population is normally distributed. Feb 25 2010 Determine the minimum required sample size if you want to be 95 confident that the sample mean is within 3 units of the population mean given sigma 78 Assume population is normally distributed. B The sample mean is 28 milligrams. If i want to construct a 95 confidence interval for the true population mean I need to estimate the standard deviation of the sample mean as s 04 sqrt 100 004.
