(05.05 LC) Anabelle collected data on the favorite superhero of the students in her class. The table shows the relative frequencies of rows for the data collected: Favorite Superhero Superman Spiderman Batman Wonder Woman Row totals Boys 0.31 0.25 0.06 0.01 0.63 Girls 0.03 0.17 0.07 0.10 0.37 Column totals 0.34 0.42 0.13 0.11 1 Based on the data, which superhero is most likely to be the favorite?

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.