What is an equilateral triangle? a.
a triangle with equal sides and angles
c.
a sacred triangle used in Islamic art
b.
a triangle whose angles equal 360
d.
none of the above

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.