Which phrase correclty describe the location on thr number line of opposite of -8? a a point 8 unit tot he left of -8. b a point 8 unit to the right of -8 c. a point 8 unit to the left of 0 d. a point 8 unit to the right of 0

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.