百度试题 题目The critical z -value(s) of the test statistic is (are): A-1.96 B+1.96 C±1.96 相关知识点: 试题来源: 解析 C At / 2 = 0.025, the critical z -values are: = ±z 0.025 = ±1.96.反馈 收藏
要做出H1为真(大于原假设),那统计值test statistic也要大于Critical Value,反之亦然。 这个统计值有很多计算方式,如下表,需要根据总体的信息来做选择。 比如Z检验,就是对比当总体的标准差已知情况下,对比样本的均值。Z检验公式如下: Z的计算公式是不是似曾相识?分母是 \sigma/\sqrt{n} 。这是中心极限定理提到...
百度试题 题目The critical z -value(s) of the test statistic is (are): A. –1.96. B. ± 1.96. C. +1.96. D. ± 2.58. 相关知识点: 试题来源: 解析 B 略 反馈 收藏
What is a z-critical value? In statistics, finding critical values is a method that allows us to decide whether to retain or reject the null hypothesis. The critical value determines if the value of the test statistic formed by given sample belongs to the rejection region. Z-critical value ...
此时应该是P(critical value)=0.05，而不是P(0.05)=critical value
statistic 统计量 statistical quality control 统计质量控制 std. residual 标准残差 stepwise regression analysis 逐步回归 stimulus 刺激 strong assumption 强假设 stud. deleted residual 学生化剔除残差 stud. residual 学生化残差 subsamples 次级样本 sufficient statistic 充分统计量 ...
The critical z-value(s) of the test statistic is (are):A. –1.96.B. ± 1.96.C. +1.96.D. ± 2.58. 正确答案:B 分享到: 答案解析: At α/2 = 0.025, the critical z-values are: ±zα/2 = ±z0.025 = ±1.96. 统计:共计0人答过,平均正确率0% 问题:进入高顿部落发帖帮助...
Find the critical value at the given alpha level using the z table. The critical value is 1.645.Determine the z test statistic using the appropriate formula. This is given by z = (¯¯¯¯¯x1−¯¯¯¯¯x2)−(μ1−μ2)√σ21n1+σ22n2(x1¯−x2¯)−(...
Acritical valueis a point on the t-distribution that is compared to the test statistic to determine whether to reject the null hypothesis in hypothesis testing. If the absolute value of the test statistic is greater than the critical value, statistical significance can be declared as well as the...
In most cases, experimenters employ numbers of groups, numbers of subjects and a nominal alpha level such that the significance (or lack thereof) of a particular test statistic can be readily determined by reference to any available statistical table. Alternately, experimenters may have statistics ...