有关置信区间的计算In a finance course at a business school,6 students are randomly selected.Their mean score on the final exam is 75,with standard deviation 8.6个学生随机抽取出来,期末平均成绩是75,方差是8What is the 95% con
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![有关置信区间的计算In a finance course at a business school,6 students are randomly selected.Their mean score on the final exam is 75,with standard deviation 8.6个学生随机抽取出来,期末平均成绩是75,方差是8What is the 95% con](/uploads/image/z/3993306-42-6.jpg?t=%E6%9C%89%E5%85%B3%E7%BD%AE%E4%BF%A1%E5%8C%BA%E9%97%B4%E7%9A%84%E8%AE%A1%E7%AE%97In+a+finance+course+at+a+business+school%2C6+students+are+randomly+selected.Their+mean+score+on+the+final+exam+is+75%2Cwith+standard+deviation+8.6%E4%B8%AA%E5%AD%A6%E7%94%9F%E9%9A%8F%E6%9C%BA%E6%8A%BD%E5%8F%96%E5%87%BA%E6%9D%A5%2C%E6%9C%9F%E6%9C%AB%E5%B9%B3%E5%9D%87%E6%88%90%E7%BB%A9%E6%98%AF75%2C%E6%96%B9%E5%B7%AE%E6%98%AF8What+is+the+95%25+con)
有关置信区间的计算In a finance course at a business school,6 students are randomly selected.Their mean score on the final exam is 75,with standard deviation 8.6个学生随机抽取出来,期末平均成绩是75,方差是8What is the 95% con
有关置信区间的计算
In a finance course at a business school,6 students are randomly selected.Their mean score on the final exam is 75,with standard deviation 8.
6个学生随机抽取出来,期末平均成绩是75,方差是8
What is the 95% confidence interval for the average class score on the final?
在95%的自信度下,全班的平均成绩是?
[66.6,83.4]
[67.6,82.4]
[68.6,81.4]
[71.7,78.3]
我的算法就是上限=75+1.96*8/根号6=81.4
选c,但答案批我错,是不是答案错了?
有关置信区间的计算In a finance course at a business school,6 students are randomly selected.Their mean score on the final exam is 75,with standard deviation 8.6个学生随机抽取出来,期末平均成绩是75,方差是8What is the 95% con
你是对的
z0.975=1.96
上限=均值+1.96*sigma/根号n