Mai took a survey of students in her class to find out how many hours they spend reading each week. Here are some summary statistics for the data that Mai gathered: mean: 8.5 hours standard deviation: 5.3 hours median: 7 hours Q1: 5 hours Q3: 11 hours a. Give an example of a number of hours larger than the median which would be an outlier. Explain your reasoning. b. Are there any outliers below the median? Explain your reasoning.

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.