The test statistic for the sign test is = where ________.
A) is the sample proportion of plus signs
B) is the sample proportion of minus signs
C) is the sample mean of plus signs
D) is the sample mean of minus signs

Question

The test statistic for the sign test is =  where ________.
A) is the sample proportion of plus signs 
B) is the sample proportion of minus signs 
C) is the sample mean of plus signs 
D) is the sample mean of minus signs

Quizplus · Accepted Answer

The test statistic for the sign test represents the number of plus signs in the sample. Therefore, choice A is correct as it states that the value in question represents the sample proportion of plus signs. Choices B, C, and D are incorrect as they refer to sample proportions or means of minus signs or plus signs, which are not what the test statistic measures.

The Test Statistic for the Sign Test Is =