微信扫一扫
实时资讯全掌握
|
Ken Wallace is interested in testing whether the average price to earnings (P/E) of firms in the retail industry is 25. Using a t-distributed test statistic and a 5% level of significance, the critical values for a sample of 40 firms is (are): A. -2.023 and 2.023. B. -1.96 and 1.96. C. -1.685 and 1.685. |