4A box holds 12 cups of cereal. This amount is equivalent to 16 servings. Use a model to show the number of cups of cereal per serving and the number of servings per cup of cereal this is ratios​

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.