Sal records the arrival time for his bus every day of the week for two months. He observed that on Thursdays the bus is at least 5 minutes later than the other days of the week. He creates this conjecture: If the bus is more than 5 minutes late, then it is Thursday. What type of reasoning did Sal use? Sal observes that the bus is 10 minutes late. If his conjecture is true, what can be concluded?