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and 35,000 miles? Square Stone Tire Company has established that the useful life of a particular brand of its automobile tires is normally distributed with
and 35,000 miles? Square Stone Tire Company has established that the useful life of a particular brand of its automobile tires is normally distributed with a mean of 30,000 miles and a standard deviation of 5000 miles. What is the probability that a randomly selected tire of this brand has a life between 20,000 0.477 O none of the given choices 0.551 0.819 0.403
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