A store sells candles. Each candle costs the same amount. During a sale, the store reduces the price of each candle by $1.70. Owen spends $11.96 on 4 candles at the sale price. what was the price of 1 candle before the sale?

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.