Explain why all triangles have at least two acute angles. If two angle measures of a triangle were each greater than or equal to
(90, 180) the sum of the three angle measures would be (greater than 90, greater than 180)
which is not possible.

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.