Give the domain and range of the relation: x y 1 1 4 4 8 1 domain {4, 4} range {8, 1} domain {1, 1} range {4, 4} domain {1, 4, 8} range {1, 4} domain {1, 4} range {1, 4, 8}

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.