Question

Let X = the number of living grandparents that a randomly selected adult American has. According to recent General Social Surveys, its probability distribution is approximately P(0) = 0.71, P(1) = 0.15, P(2) = 0.09, P(3) = 0.03, P(4) = 0.02.
a. Does this refer to a discrete or a continuous random variable? Why?
b. Show that the probabilities satisfy the two conditions for a probability distribution.
c. Find the mean of this probability distribution.


$1.99
Sales0
Views47
Comments0
  • CreatedSeptember 11, 2015
  • Files Included
Post your question
5000