Juanita has three pieces of pipe. Pipe A is 7 feet long, pipe B is 10 feet long, and pipe C is 4 feet long. If the full length of each pipe is used, can the three pieces of pipe be placed together to make a triangle?

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.