In a city of 50,000, you conducted 1,000 interviews on a random sample basis to find out how many respondents wore sneakers. Of the 1,000 interviewed, 300 wore sneakers. With a 95% confidence, how precise is your estimate?© BrainMass Inc. brainmass.com March 4, 2021, 7:27 pm ad1c9bdddf
We are being asked to find the confidence interval of our estimate
proportion who wore sneakers = 0.3 or 30% =300/1000
95% Confidence limits for proportions=
n=sample size= 1000
The expert calculates confidence interval for proportions.