Age and party 2011 II Consider again the Pew Research Center results on age and political party in Exercise 33. a) What is the marginal distribution of party affiliation? b) Create segmented bar graphs displaying the conditional distribution of party affiliation for each age group. c) Summarize these poll results in a few sentences that might appear in a newspaper article about party affiliation in the United States. d) Do you think party affiliation is independent of the voters age? Explain.

Chapter 5 --- Randomness and Probability Spin a penny example in class: What is the probability of a headWhy Why is it calledan empirical probability Are spins independent If the first 10 spins are heads is the 11 spin more likely or less likely to be a head What does the “Law of Averages” say How does the Law of LargeNumbersapply to spinning pennies Random Predictability If time permits we will draw some random samples using a Red Bead box. The box is filled with white, red and black beads. We will drawrandom samples of 50 beads from the box and count the number of colored (red or black) beads. Each sample is random and we can’t predict how many colored beads there will be in the next sample. However we can predict a pattern