请教一道统计题,没看懂什么意思,最好带题的意思的解释和答案讲解,谢谢.题在问题补充内.
来源:学生作业帮 编辑:作业帮 分类:英语作业 时间:2024/07/13 23:57:20
请教一道统计题,没看懂什么意思,最好带题的意思的解释和答案讲解,谢谢.题在问题补充内.
A personality test has a subsection designed to assess the "honesty" of the test-taker. Suppose that you're interested in the mean score, μ, on this subsection among the general population. You decide that you'll use the mean of a random sample of scores on this subsection to estimate μ. What is the minimum sample size needed in order for you to be 95% confident that your estimate is within 3 of μ? Use the value 23 for the population standard deviation of scores on this subsection.
A personality test has a subsection designed to assess the "honesty" of the test-taker. Suppose that you're interested in the mean score, μ, on this subsection among the general population. You decide that you'll use the mean of a random sample of scores on this subsection to estimate μ. What is the minimum sample size needed in order for you to be 95% confident that your estimate is within 3 of μ? Use the value 23 for the population standard deviation of scores on this subsection.
求随机抽样下最小样本量问题
总样本平均值为μ
95%置信区间
3/μ抽样误差?
标准差为23?
概率统计计算好久不用,还给老师了,过程实在给不出,抱歉了.
再问: 主要我就是搞不清哪个3 of μ是什么意思。
总样本平均值为μ
95%置信区间
3/μ抽样误差?
标准差为23?
概率统计计算好久不用,还给老师了,过程实在给不出,抱歉了.
再问: 主要我就是搞不清哪个3 of μ是什么意思。
请教一道统计题,没看懂什么意思,最好带题的意思的解释和答案讲解,谢谢.题在问题补充内.
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