A survey was conducted to determine by age group the number of registered voters who cast ballots during the recent elections. The following data were recorded:

Did You Vote?

Age Group Yes No 18–24 18 62 25–34 39 76 35–44 64 76 45–54 54 46 55 and older 82 43

a. Using a = 0.01, perform a chi-square test to determine if the proportion of voters who cast ballots during the elections differs among the five age groups of voters.

b. Determine the p-value using Excel and interpret its meaning.

c. Confirm your results using PHStat.

d. How does age appear to relate to the likelihood that a voter will cast a ballot during the elections?

AppendixLO1