A sample of 250 observations is to be selected at random from an infinite population. Given that the population proportion is 0.25, the standard error of the sampling distribution of the sample proportion is:
A)0.0274.
B)0.50.
C)0.0316.
D)0.0548.

Question

Quizplus · Accepted Answer

The standard error of the sampling distribution of the sample proportion is calculated using the formula: SE = sqrt[(p(1-p))/n], where p is the population proportion and n is the sample size. Substituting the given values: SE = sqrt[(0.25(1-0.25))/250] = 0.0274.

A Sample of 250 Observations Is to Be Selected at Random