顧同學(xué)
2017-07-24 00:34數(shù)量P155的例題中 The level of significance is 5% 這里的 5%是怎么來的，題目中并沒有提到5%？
所屬： 視頻位置 相關(guān)試題
來源： 視頻位置 相關(guān)試題
1個回答
楊博助教
2017-07-24 09:19
該回答已被題主采納
學(xué)員，你好，請上傳你的題目
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追問
題目： A financial analyst gathered data about the daily returns of a mutual fund over a recent 480-day period. The mean return is 0.2%, and the sample standard deviation of daily returns is 0.30%. The analyst considers that the mean daily return is unequal to zero. Construct a hypothesis test of the analyst's opinion.
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追問
? Step 3: Because the null hypothesis is an equality, this is a twotailed test. The level of significance is 5% , so the critical z-values for the two-railed test are ±1.96.
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追答
學(xué)員你好，這個例子是為了說明假設(shè)檢驗的過程，significance level考試中會在題目里說明
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