In "cool eye tricks," the writer refers to attempting a do-it-yourself opticallusion" by following
the steps laid out in the text
what is an optical illusion?

an obvious fake
a clear hoax
a visual trick

a photographic joke

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.