1. A tire manufacturer reads a news report that says his company's tires last an average of 4 years on the road before needing to be replaced. He tasks his R&D team with collecting sample data on their tires to test that claim. The R&D team pulled a sample from 50 test groups and found that their tires lasted an average of 6 years with a standard deviation of 1 year. Using the team's findings, test the news report's statement?

Find the t-test and wether to reject or fail to reject the null hypothesis