Arecipe calls for 4 cups of flour. lauren wants to make 20% more servings than the recipe makes. which expression represents how many cups of flour lauren should use?

a.1/5*4
b.4/5*4
c.6/5*4
d.9/5*4

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.