Kings Park Water Works uses water meters that measures water usage in ccf. They

charge $0.18 per cef for water. If Jack's previous meter reading was 34,765 and his

present water reading is 36,900 ccf, what was his water bill for the service period?

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.