Chuck wants to know which brand of tire, A or B, lasts longer on cars. He chooses 32 cars and puts brand A on one side of the car and brand B on the other side. The side that receives brand A is determined by a coin toss. After three months, Chuck measures the amount of tread on all tires to determine if, on average, there is a difference (brand A – brand B) in tread wear. Are the conditions for inference met? No. The random condition is not met. No. The 10% condition is not met. No. The Normal/Large Sample condition is not met because the sample is too small. All conditions are met.