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The weight of 1000 students in a local university are normally distributed with a mean of...

  1. The weight of 1000 students in a local university are normally distributed with a mean of 68.5kg and a standard deviation of 2.7kg.

  1. What is the probability that their weight is less than 63.0kg?       
  2. What is the probability that their weight is greater than 74.0kg?
  3. What is the probability that their weight is less than 69.0kg?                    
  4. What is the probability that their weight is between 67.5kg and 71.0kg?             

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