The Ilfetimes of Brand A tires are distributed with mean 45,000 miles and standard deviation 4500 miles while Brand B tires last for only 36,000 miles on the average with standard deviation 2020...

The Ilfetimes of Brand A tires are distributed with mean 45,000 miles and standard deviation 4500 miles while Brand B tires last for only 36,000 miles on the average with standard deviation 2020 miles. Nicole’s Brand A tires lasted 32,000 miles and Yvette's Brand B tires lasted 30,000 miles. Relatively speaking within their own brands, which driver got the better wear?