Estimate the minimum sample size needed to achieve the margin of error E = 0.025 for a 95% confidence interval. The minimum sample size is. (Round up to the nearest integer.)

Determine the t-score for a 95% confidence interval for a population mean from a sample of size 6. t =     [three decimal accuracy]

Determine the minimum sample size required when you want to be 90% confident that the sample mean is within one unit of the population mean and o = 11.3. Assume the population is normally distributed. A 90% confidence level requires a sample size of. (Round up to the nearest whole number as needed.)

Determine the minimum sample size required when you want to be 99​% confident that the sample mean is within one unit of the population mean and σ=19.2. Assume the population is normally distributed.A 99% confidence level requires a sample size ofenter your response here. ​(Round up to the nearest whole number as​ needed.)

Estimate the minimum sample size needed to achieve the margin of error E = 0.029 for a 95% confidence interval. The minimum sample size is an example (Round up to the nearest integer.)

Estimate the minimum sample size needed to achieve the margin of error E = 0.026 for a 95% confidence interval. The minimum sample size is (Round up to the nearest integer.)

Determine the minimum sample size required when you want to be 90​% confident that the sample mean is within one unit of the population mean and σ=18.9.  Assume the population is normally distributed. A 90% confidence level requires a sample size of _____________.

Determine the minimum sample size required when you want to be 99​% confident that the sample mean is within one unit of the population mean and σ=10.3. Assume the population is normally distributed.       A 99% confidence level requires a sample size of nothing. ​(Round up to the nearest whole number as​ needed.)

Determine the minimum sample size required when you want to be 99% confident that the sample mean is within one unit of the population mean and o = 12.3. Assume the population is normally distributed. A 99% confidence level requires a sample size of. (Round up to the nearest whole number as needed.)