From a random sample size of 200 drawn from a local community, 120 respondents identify themselves as Democrats. For the community as a whole, 75% of the residents classify themselves as Democrats. In this research situation________.
A) P s is .60 and P u is .50.
B) P u is .75 and P s is .60.
C) P u is .75 and P s is 120.
D) the t test is called for.

Question

Quizplus · Accepted Answer

P u (population proportion) is .75 based on the given information that 75% of the community classifies themselves as Democrats. P s (sample proportion) is .60 based on the proportion of Democrats in the random sample of 200. No information is given to suggest a t test is necessary.

From a Random Sample Size of 200 Drawn from a Local