numerical question A tire manufacturer believes that the tread life of its snow tires can be described by a Normal model with a mean of 32,000 miles and a standard deviation of 2500 miles. A dealer wants to offer a refund to customers whose snow tires fail to reach a certain number of miles, but he can only offer this to no more than 1 out of 10 customers. What mileage can he guarantee? Submit response

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