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FRM一级
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An analyst believes that hedge funds have significantly (using a significance level of 0.05) outperformed the S&P 500 over the past five years. So she picks a random group of 15 hedge funds and finds that their mean return over this period is 85% and their standard deviation is 45%. During the same period the S&P 500 has risen by 75%. The critical value of the t-statistic for this study is:
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