A tire company measures the tread on newly-produced tires and finds that they are normally distributed with a mean depth of 0.84mm and a standard deviation of 0.35mm. Find the probability that a randomly selected tire will have a depth less than 0.24mm. Would this outcome warrant a refund (meaning that it would be unusual)? Homework Help. 4VA. Calculating normal probabilities (2:18) 4DA. Description of normal distribution, area, and probabilities, definition of unusual events (DOCX) Probability of 0.96 and would not warrant a refund Probability of 0.96 and would warrant a refund Probability of 0.04 and would not warrant a refund Probability of 0.04 and would warrant a refund