Math Solutions

(See) A quality control manager has computed that the life of the light bulbs follows a normal distribution with mean 3000 hours and a standard deviation

Question: A quality control manager has computed that the life of the light bulbs follows a normal distribution with mean 3000 hours and a standard deviation of 175 hours. In a case of light bulbs that are being shipped to a customer, what is the proportion of light bulbs lasting:

  1. longer than 3250 hours?
  2. less than 2850 hours?
  3. Between 3200 and 3300 hours?

Price: $2.99
Solution: The downloadable solution consists of 2 pages
Deliverable: Word Document


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