A large Finito cost about $2.25. Explain how much you could use proportional reasoning to find how much it would cost to buy you’re hole family a large finito. lastly, explain why $ 2.25 is a unit rate

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.