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CFA2012mockQ27是不是有错啊atwo-tailedt-testofthenullhypothesisthatthepopulationmeandiffersfromzerohasap-valueof0.0275.usingasignigicatncelevelof5%,themostappropriateconclusionis:arejectthenullhypobacceptt
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CFA 2012 mock Q 27是不是有错啊
a two-tailed t-test of the null hypothesis that the population mean differs from zero has a p-value of 0.0275. using a signigicatnce level of 5%, the most appropriate conclusion is :a reject the null hypob accept the null hypoc the chosen significant level is too high.答案选A.The p-value is the smallest level of significance at which the null hypothesis can berejected. In this case, the given p-value is less than the given level of significance and we rejectthe null hypothesis.可是我觉得0.0275大于0.5/2,不是小于啊.
a two-tailed t-test of the null hypothesis that the population mean differs from zero has a p-value of 0.0275. using a signigicatnce level of 5%, the most appropriate conclusion is :a reject the null hypob accept the null hypoc the chosen significant level is too high.答案选A.The p-value is the smallest level of significance at which the null hypothesis can berejected. In this case, the given p-value is less than the given level of significance and we rejectthe null hypothesis.可是我觉得0.0275大于0.5/2,不是小于啊.
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答案和解析
p值和significance level 一样,在双尾假设下,是两边的概率之和.所以不需要把significance level除以2. 查看原帖>>
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