What is the 95% confidence interval for a population mean with a known mean of 96, a known variance of 9, and with a number of observations of 400?A. 95.613 to 96.387.B. 95.706 to 96.294.C. 95.118 to 96.882. 正确答案:B 分享到: 答案解析: Because we can compute the population stan...
What does the phrase "99% confident" mean?Confidence Interval:The confidence interval is the range of values that contains the population parameter with a certain confidence level. It uses the sample statistic like sample mean, sample proportion, etc., to calculate the range for the population ...
At a 5% significance level (95% confidence level), what is the critical value (s) in this test? Do we reject the null hypothesis? Hypothesis Testing The hypothesis test is a statistical test that is either parametric or non-parametric. In t...
In contrast, when nonsignificant differences between treatments, groups, or parameters of interest are reported (e.g., P > .05), many investigators and readers incorrectly interpret the 95% confidence interval for this conclusion as a 95% chance of making the correct decision. In fact, the 伪...
Therefore, an independent t-test was run on the data with a 95% confidence interval (CI) for the mean difference. It was found that after the two interventions, cholesterol concentrations in the dietary group (6.15 ± 0.52 mmol/L) were significantly higher than the exercise group (5.80 ± ...
With a desired statistical power level of 0.95, a confidence level of 0.99, an anticipated effect size of 0.15, and a predictor variable number of three, it was revealed that the minimum sample size needed to estimate the proposed model was 119 respondents, which is less than our final ...
What does the phrase "93% confident" mean in the context of the confidence interval for {eq}\mu {/eq}?Confidence IntervalUse a confidence interval to estimate a population mean. The interval uses the sample mean as the point estimate and calculates the margin of error ...
百度试题 结果1 题目 What is the confidence interval where the mean is 42.486 and the margin of error is 3.226? 相关知识点: 试题来源: 解析 to 45.71 反馈 收藏
What Does a Confidence Interval Reveal? A confidence interval is a range of values, bounded above and below the statistic's mean, that likely would contain an unknown population parameter. Confidence level refers to the percentage of probability, or certainty, that the confidence interval would con...
What Does a High VaR Mean? A high value for the confidence interval percentage means greater confidence in the likelihood of the projected outcome. Alternatively, a high value for the projected outcome is not ideal and statistically anticipates a higher dollar loss to occur. ...