题目
题目

FA25_QTM_100_3 Final Exam- Requires Respondus LockDown Browser

单项选择题

A hypothesis test about the true proportion was performed using the following hypotheses, which yielded a p-value < 0.05 (suppose all conditions for inference are satisfied): 𝐻 0 : 𝑝 = 0.7 , 𝐻 𝑎 : 𝑝 < 0.7 Which of the following scenarios would yield a similar p-value (i.e., p-value < 0.05) as the initial hypothesis test above?

选项
A.𝐻 0 : 𝑝 = 0.7 , 𝐻 𝑎 : 𝑝 < 0.7 , 𝑧 = 2.08
B.𝐻 0 : 𝑝 = 0.5 , 𝐻 𝑎 : 𝑝 > 0.5 , 𝑧 = − 2.04
C.𝐻 0 : 𝑝 = 0.5 , 𝐻 𝑎 : 𝑝 ≠ 0.5 , 𝑧 = − 2.01
D.𝐻 0 : 𝑝 = 0.6 , 𝐻 𝑎 : 𝑝 > 0.6 , 𝑧 = 2.03
查看解析

查看解析

标准答案
Please login to view
思路分析
The question presents a hypothesis test about a true proportion with H0: p = 0.7 and Ha: p < 0.7, and it states that the p-value was less than 0.05. We’re asked to identify which of the given scenarios would yield a similar p-value (i.e., p-value < 0.05). Option 1: H0: p = 0.7, Ha: p < 0.7, z = 2.08 - For a left-tailed test (Ha: p < 0.7), the p-value is the probability of observing a z statistic as extreme or more in the left tail, i.e., p = P(Z ≤ z_obs). - Here z_ob......Login to view full explanation

登录即可查看完整答案

我们收录了全球超50000道考试原题与详细解析,现在登录,立即获得答案。

类似问题

At the beginning of the semester, a professor hypothesizes that half of the class would think the pace of the class was ‘just right’. After collecting anonymous survey data from a random sample of the class, it was observed that 57% of the class though the pace was ‘just right’. What is the appropriate null hypothesis to determine if the true proportion of students who thought the pace was ‘just right’ differs from the hypothesized value?

A researcher collects data on the diabetes rate of 100 subjects in 2021. The researcher uses a __________ to determine if the true proportion of adults with diabetes in the United States in 2021 is different from the 2009 reported figure of 9%. 

For developing countries in Africa and the Americas, let p1 and p2 be the respective proportions of babies with a low birth weight (below 2500 grams). Suppose we will test H0: p1 = p2 against H1: p1 > p2. If respective random samples of sizes n1 = 900 and n2 = 700 yield y1 = 135 and y2 = 77 babies with a low birth weight, what is the p-value associated with this hypothesis test.  (Give your answer to four decimal places.)

Researchers are studying whether a high-protein diet reduces mortality in lab mice exposed to a toxin. Among 900 mice on a standard diet, 36 died. Among 950 mice on a high-protein diet, 15 died. Definitions: p1 = proportion of mice that died on the standard diet p2 = proportion of mice that died on the high-protein diet Hypotheses: H0: p1 = p2 (The diet does not affect mortality; both groups have the same mortality rate) H1: p1 > p2 (The diet reduces mortality; mice on the standard diet have a higher mortality rate) What is your decision, and what does it mean in the context of the study?

更多留学生实用工具

加入我们，立即解锁 海量真题 与 独家解析，让复习快人一步！