Question

Given a variable with the following population parameters:                       Mean = 20          &nb

  1. Given a variable with the following population parameters:

                      Mean = 20                        Variance = 16   

  1. What is the probability of obtaining a mean greater than 23?
  2. What is the probability of obtaining a mean less than 21?
  3. What is the probability of obtaining a mean less than 18.2?
  4. What is the probability of obtaining a mean greater than 19.5 and less than 21.2?
  5. What is the probability of obtaining a mean greater than 20.5 and less than 21.5?
  6. What is the sample mean at which 65% of the data falls at or below?
  7. What is the sample mean at which 82% of the data falls at or above?
  8. Within what two sample means do 90% of the means fall (i.e. symmetrically)?
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