WebFor a 95% confidence interval, z ∗ = 1.960. n = ( 1.960 0.04) 2 ( 0.5) ( 1 − 0.5) = 600.25. This is the minimum sample size, therefore we should round up to 601. In order to … WebQuestion: Which of the following is NOT required to determine minimum sample size to estimate a population mean? oks Choose the correct answer below. O A. The size of the population, N OB. The desired confidence level O C. The value of the population standard deviation, o OD. The desired margin of error
How to Calculate Sample Size: 14 Steps (with Pictures)
WebTranscribed Image Text: K Determine the minimum sample size required when you want to be 95% confident that the sample mean is within one unit of the population mean and … WebResults. Your recommended sample size is: 385. The sample size (n) is calculated according to the formula: n = z2 * p * (1 - p) / e2. Where: z = 1.96 for a confidence level … phonation medizin
7.2.2.2. Sample sizes required - NIST
WebThe estimate must be within 0.5 milligram of the population mean. (a) Determine the minimum sample size required to construct a 95% confidence interval for the population mean. Assume the population standard deviation is 2.8 milligrams. (b) Repeat part (a) using a 99% confidence interval. (c) Which level of confidence requires a larger sample size? WebMar 26, 2024 · The estimated minimum sample size n needed to estimate a population mean μ to within E units at 100 ( 1 − α) % confidence is. (7.4.1) n = ( z α / 2) 2 σ 2 E 2 (rounded up) To apply Equation 7.4.1, we must have prior knowledge of the population in order to have an estimate of its standard deviation σ. In all the examples and exercises … WebThe minimum sample size is 100. Most statisticians agree that the minimum sample size to get any kind of meaningful result is 100. If your population is less than 100 then you … how do you hem a wool coat