【判断题】A market researcher computed a confidence interval for a population proportion using a 95% confidence level. Her boss decided that she wanted a 99% confidence level instead. The new interval with 99% ...
【判断题】A 95% confidence interval estimate for a population mean is determined to be 75 to 85. If the confidence level is reduced to 80%, the confidence interval for μ becomes narrower.
【单选题】Which one is correct bellow for the 95% confidence interval of mean?
A.
95% CI is wider than a 99% CI.
B.
95% CI will include the sample mean with a probability of 95%.
C.
95% CI will include 95% of the observations of a sample
D.
95% CI will include the population mean with a probability of 95%.
【单选题】Dose the constructed confidence interval include the population mean under the 95% confidence level?
【单选题】Which one is correct bellow for the 95% confidence interval of mean?
B.
the population mean has a probability of 95% to appear in its 95% CI
C.
95% CI will include 95% of the observations of a sample
D.
95% CI will include the population mean with a probability of 95%
【单选题】•Read the article below about Thomas Kingsley. •Choose the correct word to fill each gap, from A, B or C below. •For each question 29-40 mark one letter (A, B or C) on your Answer Sheet. Meet Thomas K...
【判断题】For a given data set, the confidence interval will be wider for 95% confidence than for 90% confidence.