Statistics Solutions

[Steps Shown] A statistical analysis of 1,000 long-distance telephone calls made from the headquarters of the Bricks and Clicks Computer Corporation indicates

Question: A statistical analysis of 1,000 long-distance telephone calls made from the headquarters of the Bricks and Clicks Computer Corporation indicates that the length of these calls is normally distributed, with a mean of 240 seconds and a standard deviation of 40 seconds.

  1. What is the probability that a call lasted less than 180 seconds?
  2. What is the probability that a call lasted between 180 and 300 seconds?
  3. What is the probability that a call lasted between 110 and 180 seconds?
  4. What is the length of a call if only 1% of all calls are shorter?

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Solution: The downloadable solution consists of 2 pages
Deliverable: Word Document


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