What is the surface of the pool? 80ft by 160ft a. 8224ft^2
b. 26,496 ft^2
c. 17,824 ft^2
d. 32,896 ft^2
e. 11,424 ft^2​

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.