In a 25-mile race, the 4 runners are each wearing a bib with their registration number. what is the registration number of the runner who has completed 0.8 of the race? bar graph titled miles run. vertical axis is labeled number of miles run. horizontal axis is labeled registration number. for bar 234, bar height is 20. for bar 365, bar height is 15. for bar 451, bar height is 10. for bar 589, bar height is 11.

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.