When a Confidence Interval for a Population Proportion Is Constructed

question 36

Multiple Choice

When a confidence interval for a population proportion is constructed for a sample size n = 30 and the value of = .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 the other choices is correct.

---

Definitions:

Standard Deviation

A metric that quantifies the spread of a dataset around its mean, computed as the square root of the variance.

Variability

A measure of how spread out or dispersed the scores in a dataset are.

Bell Shaped Histograms

Histograms showing the frequency distribution of data that forms a symmetrical, bell-shaped curve, indicating a normal distribution.

Histograms

Graphical representations of the distribution of numerical data, showing the frequency of data within certain ranges.