A polynomial ppp has zeros when x=5x=5x, equals, 5, x=-1x=−1x, equals, minus, 1, and x=-\dfrac14x=− 4 1 x, equals, minus, start fraction, 1, divided by, 4, end fraction. What could be the equation of ppp?

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.