In a company, two seller teams are working. The manager claims that the first team's profit is higher than the second team's profit. The manager collected the profit of the teams for 40 days (n) for the first team, and 40 days (n2)for the second team. The first team mean profit is 12 million TL, and the standard deviation is 4. The second team means profit is 7 million TL, and the standard deviation is 3. Test the manager's claim with 0.05 significance level.