How to do all of question 11. Answers at the bottom

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.

Asinusoidal function whose frequency is 1/6pi

Solve the equation: x - 9 = -6 + 5 a. 21 b. 7 c. 14 d. 2