La Pied manufactures high-quality orthopedic shoes. Over the past five years, the general public has “found” La Pied products, and sales have skyrocketed. One unanticipated result has been a sharp increase in factory returns for repair, since local shoe repair shops do not have the materials or expertise to fix La Pied products. The popular walking sandal has been targeted for redesign. Currently, the leather pieces are glued together, then stitched. There is a 70% chance that the glue will last for the life of the sandal, and a 50% chance that the stitching will remain intact. Determine the sandal’s reliability. How would the reliability of the sandal increase if the company adds two more rows of stitching?
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