The function y=f(x)y=f(x) is graphed below. Plot a line segment connecting the points on ff where x=-5x=−5 and x=5.x=5. Use the line segment to determine the average rate of change of the function f(x)f(x) on the interval -5\le x \le 5−5≤x≤5?

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.