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[Solution Library] In a study of fingerprints, an important quantitative characteristic is the total ridge count for the 10 fingers of the person. Suppose the

Question: In a study of fingerprints, an important quantitative characteristic is the total ridge count for the 10 fingers of the person. Suppose the total ridge counts of the individuals in a certain population are approximately normally distributed with a mean of 140 and a standard deviation of 50.

  1. Find the probability that an individual picked at random from this pop will have a ridge count of 200 or more.
  2. In a population of 10,000 people how many would you expect to have a ridge count of 200 or more?

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