Based on a sample of 800 people, 26% owned cats. The p-value is?

Answer 1

What's your hypothesis? You need one to set up a statistical test, and you need to do calculate some type of inferential statistic to get a p-value?

My BEST GUESS is you want to test if 26% really is the percentage of people who own cats. If that IS the case, then: you have a binomial endpoint (Do you own a cat? is a Yes/No question), but with a sample size of 800, it's approximately normal, and to test for significance, you can use a single proportion z-test. Now you just need to determine these 3 parameters:(p. (1-p), and n) and plug them into the formula. P is generally the probability of "success", so you need to decide if owning a cat is a 'success' or not. The problem gives you all the information you need to fing those 3 parameters. That should be enough info for you to do the rest & find the answer.