A random survey by a radio station at the mall showed 380 out 500 people preferred country music as their music genre. If the area surrounding the mall has approximately 15,000 people, how many would the station predict would prefer country music? A.11,400

B.900

C.13,000

D.1,140

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.