The Greer Tire company manufactures a new steel-belted radial tire to be sold through a national chain of discount stores.  Because the tire is a new product, Greer’s managers believe that the mileage guarantee offered with the tire will be an important factor in the acceptance of the product.  Let X = miles that the tires last:   X~N(60,000  2,500) Find the mileage guarantee that ensures this company will repair no more than 15% of its product for free.  Assume the distribution of tire mileage is normal.

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The Greer Tire company manufactures a new steel-belted radial tire to be sold through a national chain of discount stores.  Because the tire is a new product, Greer’s managers believe that the mileage guarantee offered with the tire will be an important factor in the acceptance of the product.  Let X = miles that the tires last:  

X~N(60,000  2,500)

Find the mileage guarantee that ensures this company will repair no more than 15% of its product for free.  Assume the distribution of tire mileage is normal.

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