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試卷名稱：110年 - 110 國立中央大學_碩士班招生考試_共同科目:統計學#105819
年份：110年
科目：研究所、轉學考(插大)◆統計學
13. From a population that is not normally distributed and whose standard deviation is unknown, a sample of 15 items is selected to develop an interval estimate for the population mean μ. Which of the following is true?
(A)The sample size must be increased;
(B)The normal distribution may be used;
(C) Thet distribution with 14 degrees of freedom can be used;
(D) The t distribution with 15 degrees of freedom can be used.