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jprust87 jprust87
wrote...
6 years ago
The life expectancy of a particular brand of tire is normally distributed with a mean of 40,000 and a standard deviation of 5,000 miles. What is the probability that a randomly selected tire will have a life of at least 47,500 miles?
 a. 0.4332
  b. 0.9332
  c. 0.0668
  d. 0.4993
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6 years ago
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