题目内容

（判断题）对单个总体比例的假设检验的，样本必须是大样本（）

A. 对
B. 错

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（判断题）t检验实际是解决大样本均值的检验问题。

A. 对
B. 错

_____________

A. His health.
B. His presentation.
C. His exam.
D. His interview.

_____________

A local paper.
B. A movie ticket.
C. A price list.
D. A name card.

_____________

A. Call John
B. Ask for help.
C. Visit the man.
D. Write a report.