At the beginning of his vocation the odometer on mike’s car read 8546.3 mi at the end of the vocation the odometer read 9834.9 mi if mike used 65.4 gal of gas on his vocation how many miles did he travel on each gallon

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.