Helen had to read 148 pages of her science textbook in the 4 days remaining before an exam. if she reads the same number of pages each day, how many pages will she need to read each day?
a. 38
b. 37
c. 36
d. 40

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.