There are three factors that affect the width of a large-sample confidenceinterval for p: the confidence interval, the sample size, and the sample proportion,pˆ. In each of the following problems, determine whether the width of the resulting confidence interval for p increases or decreases.
a. Confidence level and pˆ are constant, and n increases.
b. Sample size and pˆ are constant, and confidence level decreases.
c. Sample size and confidence level are constant, and pˆ(>0.5) increases.