The following table shows the distribution of the ages of Ohio voters in a 2008 exit poll conducted by Quinnipiac University. The table also shows the observed frequencies from a random sample of Ohio voters by age group in the 2014 midterm elections.

Age Group Percentage 2008 Observed Frequency 2014 18–29 17 14 30–44 27 18 45–64 39 73 65 and older 17 35 Total 100 140

a. Using a = 0.05, perform a chi-square test to determine if the ages of voters in Ohio changed from 2008 to 2014.

b. What conclusions about an Ohio voter’s age can be made based on this sample?

AppendixLO1