1. 显著性水平(level of significance) alpha是拒绝正确零假设的最大值 也就是在H0成立下落入拒绝域的概率 H0若是简单假设,只取一个概率分布,如p=p0,则直接求 H0若是复合假设,可取多个概率分布,如p<=p0,则求的是拒绝H0的最大概率 这里就是复合假设,p可以取多个值,但是由于随p递增,故p取最大值时候就是al...
Not all results of hypothesis tests are equal. Ahypothesis testor test of statistical significance typically has a level of significance attached to it. This level of significance is a number that is typically denoted with theGreek letteralpha. One question that comes up in a statistics class is...
| Statistics In frequentist statistics, the alpha level (also known as the significance level) is the probability of rejecting thenull hypothesiswhen it is true. In the context of physiotherapy research, the null hypothesis might be that there is no difference in pain reduction between two differe...
Jim Frost. Understanding hypothesis tests: Significance levels (alpha) and p values in statistics, June 2015. URL: http://blog.minitab.com/blog/adventures-in-statistics/understanding-hypothesis- tests%3A-significance-levels-alpha-and-p-values-in-statistics (Accessed: 2016-04-15)....
On the probability distribution plot, the significance level defines how far the sample value must be from the null value before we can reject the null. The percentage of the area under the curve that is shaded equals the probability that the sample value will fall in those regions if the ...
Significance Level: The significance level is denoted by {eq}\alpha {/eq}, therefore, also known as alpha level. The alpha level is the area of the rejection region that lies at the tail/s of the distribution. If we have a test sta...
Please fill in the computer printout and answer the following questions. Given that alpha = 0.05 When, Ho : X unif(0, 1) vs Ha : X Exp(1). (a) Find the most powerful test with significance level α = 0.05. (b) Find the power. ...
Apply the new alpha level to each test for findingp-values. In this example, the p-value would have to be .01 or less for statistical significance. The Bonferroni correction has been criticized for (among other things) loss ofpowerand a high probability ofType II errors. ...
If, in a (two-tail) hypothesis test, the p-value is 0.1029, what is your statistical decision if you test the null hypothesis at the 0.08 level of significance? A. Since the p-value is greater than α, do not reject H0. B....
The 5 steps required in the hypothesis testing are:- establishing the null hypothesis (denoted by {eq}H_0 {/eq}), establishing the alternate hypothesis (denoted by {eq}H_1 {/eq}), setting the level of significance or alpha, test statistic calcul...