【判断题】外在的情绪表现通常称之为表情,包括面部表情、姿态表情和语调表情。( )
【单选题】阅读《听听那冷雨》教学片段,按照要求答题。师:我把题目中的“冷”改为“寒”“苦”,大家觉得这样改好不好?生:用“寒”字太过了一点,不能够表达景物的特点。生:“冷”字夹杂着作者对故乡的思念,“寒”并不能表示。春雨用“冷”形容很恰当。“寒”让人有不舒服的感觉。师:“寒”“苦”都不能表现出诗人心境即情。无法准确地表现“凄冷”的特点,还有情的凄凉。把景和情很好地组合在一起,通常我们称之为“意境”,它是一个...
【单选题】In a one-tailed hypothesis test:
A.
the rejection region is in only one of the tails of a distribution.
B.
the rejection region is split between the tails of a distribution.
C.
the area of the rejection region equals the p-value.
D.
the area of the rejection region is twice the value of the p-value.
【单选题】In performing a hypothesis test where the null hypothesis is that the population mean is 23 against the alternative hypothesis that the population mean is not equal to 23, a random sample of 17 items ...
【单选题】To use a z statistic in a one-sample hypothesis test of a mean, we need to know:
B.
the population standard deviation.
【单选题】阅读《听听那冷雨》教学片段,按照要求答题。师:我把题目中的“冷”改为“寒”“苦”,大家觉得在表达效果上有什么不一样?生:“寒”用词太过了一点,不能够表达景物的特点。生:“冷”字夹杂着作者对故乡的思念,“寒”并不能表示。春雨用“冷”形容很恰当。“寒”让人有不舒服的感觉。师:“寒”“苦”都不能表现出诗人心境,即情。“冷”字除了表现“凄冷”的特点,还有情的凄凉,把景和情很好地组合在一起,通常我们称之为“...
【单选题】In a hypothesis test comparing two means of the independent normal populations, we use the z distribution test statistic when ( )
A.
both population standard deviations are known.
B.
the two population standard deviations are unkown.
C.
the two population standard deviations are equal.