If n=22, x=40, and s=3, find the margin of error at a 90% confidence level using the critical value rounded to three decimal places. Give your answer as an equation or as a number rounded to three decimal places.
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- Given a sample size of 400 with a mean of 80 and the population standard deviation is found to be 35 having a 96% confidence level. What is the length of the confidence interval?show the solutions.For a population of normally distributed scores, μ = 155 and σ = 12, approximately what would be the 95% confidence interval of the population mean based upon a random sample of 16 scores with a mean of 140?If n = 260 and X = 208, construct a 90% confidence interval for the population proportion, p.Give your answers to three decimals
- Find the critical value, t c, used for a 90% confidence interval for the mean with a sample size of 17.If n= 15, x̅= 47, and s= 7, construct a confidence interval at a 95% confidence level. Assume the data came from a normally distributed population. Give your answers to three decimal places.If n = 14, ¯x = 39, and s = 13, construct a confidence interval at a 95% confidence level. Assume the data came from a normally distributed population. Give your answers to three decimal places. < μ<
- Find the critical value zα/2 that corresponds to the confidence level 90%. QUESTION** zα/2 = ?If n = 14, ¯xx¯ = 44, and s = 18, construct a confidence interval at a 95% confidence level. Assume the data came from a normally distributed population. Give your answers to three decimal places. < μ <Find the critical value zα/2 that corresponds to the given confidence level. 89%
- If we want a 96% confidence interval on population mean with a sample size of 23, find zα2 or tα2A confidence interval has been determined to be -6<u<6, what was the sample mean that was used to produce this confidence interval?If n=400 and X=80, construct a 90% confidence interval estimate for the population proportion. ______≤π≤_____ (Round to four decimal places as needed