You want to obtain a sample to estimate a population mean. Based on previous evidence, you...
You want to obtain a sample to estimate a population mean. Based on previous evidence, you believe the population standard deviation is approximately σ=38.5σ=38.5. You would like to be 98% confident that your esimate is within 1 of the true population mean. How large of a sample size is required? n = Do not round mid-calculation. However, use a critical value accurate to three decimal places — this is important for the system to be able to give hints for...
You want to obtain a sample to estimate a population mean. Based on previous evidence, you believe the population standard deviation is approximately σ=39.2. You would like to be 98% confident that your estimate is within 5 of the true population mean. How large of a sample size is required? n =
You want to obtain a sample to estimate a population mean. Based on previous evidence, you believe the population standard deviation is approximately o = 74.5. You would like to be 99.5% confident that your esimate is within 4 of the true population mean. How large of a sample size is required? no Use a critical value accurate to three decimal places, and do not round mid-calculation - this is important for the system to be able to give hints...
You want to obtain a sample to estimate a population mean. Based on previous evidence, you believe the population standard deviation is approximately o = 21.3. You would like to be 95% confident that your estimate is within 5 of the true population mean. How large of a sample size is required?
You want to obtain a sample to estimate a population mean. Based on previous evidence, you believe the population standard deviation is approximately σ=26.9σ=26.9. You would like to be 95% confident that your estimate is within 1 of the true population mean. How large of a sample size is required?
You want to obtain a sample to estimate a population mean. Based on previous evidence, you believe the population standard deviation is approximately σ=61.9σ=61.9. You would like to be 90% confident that your estimate is within 1.5 of the true population mean. How large of a sample size is required?
You want to obtain a sample to estimate a population mean. Based on previous evidence, you believe the population standard deviation is approximately σ = 45.7 . You would like to be 95% confident that your estimate is within 0.1 of the true population mean. How large of a sample size is required? n=
You want to obtain a sample to estimate a population mean. Based on previous evidence, you believe the population standard deviation is approximately σ=49.6σ=49.6. You would like to be 95% confident that your estimate is within 1.5 of the true population mean. How large of a sample size is required?
In order to obtain a sample to estimate a population mean. Based on previous evidence, you believe the population standard deviation is approximately σ=54.7. You would like to be 99% confident that your estimate is within 3 of the true population mean. How large of a sample size is required? I did: 99%= 2.575 for z-score so, ((2.575)(54.7)/.03) ^2 But I don't seem to get the correct answer. Can someone show me how to do this step by step, thank...
You want to obtain a sample to estimate a population mean. Based on previous evidence, you believe the population standard deviation is approximately σ = 37.2 σ = 37.2 . You would like to be 90% confident that your estimate is within 1.5 of the true population mean. How large of a sample size is required? n=?