Advanced Placement (AP)

Akira Pitts

8 July, 19:32

A market analyst is curious what proportion of Los Angeles residents have a landline telephone. A survey of 200 randomly selected Los Angeles residents shows that 48% percent of those selected have a landline telephone. The analyst wants to use this data to construct a one-sample z interval for a proportion. Which conditions for constructing this confidence interval did their sample meet?

Choose all answers that apply:

(Choice A)

The data is a random sample from the population of interest.

(Choice B)

The observed counts of successes and failures are both sufficiently large.

(Choice C)

Individual observations can be considered independent.