Reading 11: Hypothesis Testing - LOS e, (Part 2) ～ Q1 style, white, hypothesis

mayanfang1

Q1. A test of a hypothesis that the means of two normally distributed populations are equal based on two independent random samples:

A)   is a paired-comparisons test.

B)   is based on a

Chi Square

statistic.

C)   is done with a t-statistic.

mayanfang1

答案和详解如下：

Q1. A test of a hypothesis that the means of two normally distributed populations are equal based on two independent random samples:

A)   is a paired-comparisons test.

B)   is based on a

Chi Square

statistic.

C)   is done with a t-statistic.

Correct answer is C)

We have two formulas for test statistics for the hypothesis of equal sample means. Which one we use depends on whether or not we assume the samples have equal variances. Either formula generates a test statistic that follows a T-distribution.

zeraeh

看答案，谢谢LZ

jacky_z

Thanks

风烈

谢谢楼主\·

hjl2000

d

simen_wu

good

connie198226

ss

hollyhe

d

大狗狗

k