OpenStax, Statistics §8.3 A Population Proportion · Try It 6 · Statistics · Confidence intervals
A Population Proportion · Try It 6
An internet marketing company wants to determine the current percentage of customers who click on ads on their smartphones. How many customers should the company survey in order to be 90 percent confident that the estimated proportion is within 5 percentage points of the true population proportion of customers who click on ads on their smartphones? Assume that the sample proportion p′ is 0.50.
OpenStax, Statistics · §8.3 A Population Proportion · Try It 6
Stuck? A gentle nudge
No hints for this one.
Your working
Check your full solution
Upload photos of your handwritten work or a PDF, and Lemma will read it and tell you whether it's right — and where it first goes wrong if not.