What percentage of vaccinated students were smokers?

17. What are the degrees of freedom?

18. What is the chi-square value?

19. Is this result significant? How can you tell?

20. Write the results of this chi-square test in APA format.

Smoker	Vaccinated
0	0
0	0
1	1
1	1
0	0
0	1
1	1
1	1
1	1
1	1
0	0
0	0
0	1
0	1
1	1
0	1
0	1
0	1
0	1
0	1
0	1
1	1
0	1
0	1
0	1
0	0
0	0
1	0
0	0
0	1
0	0
0	1
0	1
0	1
0	1
0	1
0	1
0	1
0	1
0	1
0	1
0	1
0	1
0	1
0	1
0	1
0	1
1	0
0	0
0	1
1	0
1	0