2% Of 144.4 is what is what

Me with this one question, and i'll upvote the brainliest answer

Show your workcan a right triangle have this sides? *how to prove it without using the pythagorean theorema*

According to a study conducted in 2015, 18% of shoppers said that they prefer to buy generic instead of name-brand products. suppose that in a recent sample of 1500 shoppers, 315 stated that they prefer to buy generic instead of name-brand products. at a 5% significance level, can you conclude that the proportion of all shoppers who currently prefer to buy generic instead of name-brand products is higher than .18? use both the p-value and the critical-value approaches.