Use sample data to estimate population means/proportions and develop margins of error using simulation.
Use a sample proportion to estimate a population proportion
Problem
Of \(200\) surveyed people, \(138\) support proposal A. Compute the sample proportion and use it to estimate the population proportion.
Big Picture
What this problem is really about
Turn the favorable count into a sample proportion by dividing it by the full sample size. That statistic, often written p hat, is the natural point estimate of the matching population proportion. Keep the estimate distinct from the unknown parameter, since another random sample could produce a different proportion.
Inside Gozunta
Turn the preview into practice.
More than a preview
Gozunta lets you study this problem—and more than 10,000 others.
Create targeted learning sessions, use hints, check your answer, read the walkthrough, watch the video, print the work, and track your progress.
