The first three questions refer to the following information: The random variable X, representing the number of children per family in the Northern part of India, has the following probability distribution: Number of Children I] 1 Z 3 Northern India .03 .07 .21 .34 .25 .09 .01 Which of the three random variables has the largest standard deviation? The following three histograms represent the probability distributions of the three random variables X, Y, and Z. Probability Probability Probability .1 N w .5 w O .1 N .4- N- IL