When a confidence interval for a population proportion is constructed for a sample size n = 30 and the value of $\hat { p }$
= )4,the interval is based on:
A)The z distribution.
B)The t distribution.
C)The exponential distribution.
D)The Poisson distribution.
E)None of thesE.

Question

Quizplus · Accepted Answer

When the sample size (n) is greater than or equal to 30, we can assume that the sampling distribution of sample proportions is approximately normal. Therefore, we can use the z-distribution to construct a confidence interval.

When a Confidence Interval for a Population Proportion Is Constructed p^\hat { p }p^​

When a Confidence Interval for a Population Proportion Is Constructed $\hat { p }$