HPV Vaccine. In the article “Correlates for Completion of 3-dose Regimen of HPV Vaccine in Female Members of a Managed Care Organization” (Mayo Clinical Proceedings, Vol. 84, pp. 864–

870), C. Chao et al. examined factors that may influence whether young female patients complete a three-injection sequence of the Gardasil quadrivalent human papillomavirus vaccine (HPV4). HPV is a virus that has been linked to the development of cervical cancer. The following contingency table summarizes the data obtained for completion of treatment versus practice type. Practice Completion Yes No Total Pediatric 162 353 515 Family 106 259 365 OB/GYN 201 332 533 Total 469 944 1413

a. At the 5% significance level, do the data provide sufficient evidence to conclude that an association exists between completion of treatment and practice type?

b. Repeat part

(a) at the 1% significance level.