Jon solved the radical equation Sqrt (blank)= x and got x=2 and x=-3 as solutions. He did all the steps correctly. He then checked these solutions and threw out any that were extraneous. Write down his final answer.

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.