6. An aviation researcher examined whether airport executives (AEs) and aviation maintenance technicians (AMTs) also had a PPL. A random sample yielded the following data:

Data analysis resulted in χ2 = 10.42. If the researcher expected a ratio of 3:2:3:2 for Groups A–D, respectively, are the observed results inconsistent with the expected ratio for α = .05?

a. Yes, because χ2* > χ2 critical.

b. Yes, because χ2*

c. No, because χ2*

d. Yes, because χ2* > χ2 critical.

Transcribed Image Text:

Group A. AEs w/PPL B. AEs w/o PPL C. AMTs w/PPL D. AMTs w/o PPL 2042 f 25 10 45 20