Two rectangular picture frames have the same area of 45 square inches but have different side length. One frame has a length of 6 3/4 inches, and the other frame has a length of 7 1/2 inches. - Before calculating, predict which frame has the shorter width. Explain your reasoning.

- Calculate the width that you predicted to be shorter.

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.