In: Computer Science
| Did you vote? | 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 survey was conducted to determine by age group the number of registered voters who cast ballots during the recent elections. The table above was the data recorded.
a. Using α = 0.01, perform a chi-square test to determine if the proportion of voters who cast ballots during the elections differs among the five groups of voters.
b. Determine the p-value using Excel (and Table 8 of Appendix A, page 861) 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?