题目 Greg Barns, FRM, and Jill Tillman, FRM, are discussing the hypothesis they wish to test with respect to the model represented by「huixue_img/importSubject/1564169387697639424.png」. They [...]
题目 The test statistic for an F-test of the equality of two sample variances is the: 选项 A.product of the two sample variances. B.ratio of the two sample standard deviations. C.product of the [...]
题目 A Type I error occurs when the null hypothesis: 选项 A.fails to be rejected when it is false. B.is rejected when it is false. C.fails to be rejected when it is true. D.is rejected when it is [...]
题目 Which of the following statements about sampling and the central limit theorem is least likely correct? 选项 A.The variance of the distribution of sample means is \u03c32\/n. B.The central [...]
题目 Regression Statistics:「huixue_img/importSubject/1564169387659890688.png」Based on the results and a 5% level of significance, which of the following hypotheses cannot be rejected? 选项 [...]
题目 Based on a sample size of 100 and sample mean of $30, you estimate a 95% confidence interval for the mean weekly soft drink expenditures of students at a local college. Your estimate of the [...]
题目 A fund of funds has investments in 36 hedge funds. At the end of the year, the meanreturn of the constituent hedge funds was 13.0%. The standard deviation of the funds' returns was 9.0%. The [...]
题目 An analyst is given the task of determining whether a group of 16 active portfolio managers have achieved a significantly higher performance (using a significance level of 0.05) than the [...]
题目 What does a hypothesis test at the 5% significance level mean? 选项 A.P (not reject H_0 H_0 is true)=0.05 B.P (not reject H_0 H_0 is false)=0.05 C.P (reject H_0 H_0 is true)=0.05 D.P (reject [...]
题目 For a standard normal distribution, which of the following choices is the approximate area under the probability density function from values -1.96 to 1.96? 选项 A.50% B.66% C.75% D.95% [...]
