"a gumball machine is in the shape of a sphere with a radius of 6 inches. a store manager wants to fill up the machine with miniature gumballs, which have a radius of 1/3in. how many gumballs will fit in the machine? " a. 14.2 b. 5832 c. 1642 d. 972

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.