Jupiter revolves around the sun every 12 years. Uranus takes 84 years to revolve around the sun. If Uranus and Jupiter passed the same point of the sun sometime in 2002, when will they pass that point together again?

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.