What is the approximate volume of a cylinder with a diameter of 14 meters and a height of 10 meters? use 3.14 for pi.
a.
219.8 m3
b.
439.6 m3
c.
1538.6 m3
d.
6154.4 m3

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.