Question

The package of Sylvania CFL 65-watt replacement bulbs that use only 16 watts claims that these bulbs have an average life of 8000 hours. Assume that the lives of all such bulbs have a normal distribution with a mean of 8000 hours and a standard deviation of 400 hours. Let  be the average life of 25 randomly selected such bulbs. Find the mean and standard deviation of , and comment on the shape of its sampling distribution.


$1.99
Sales0
Views28
Comments0
  • CreatedAugust 25, 2015
  • Files Included
Post your question
5000