In the article “Repair of Lateral Wall Insufficiency” published in JAMA Facial Plastic Surgery (Vaezeafshar, 2018), the authors reported the results of a study on 44 patients with nasal obstruction and lateral wall insufficiency (LWI) who underwent LWI repair and 44 age and sex-matched control patients who did not have LWI repair (NLWI). The summary statistics for the study are given in Table 7.28 for two procedures the patients in each group underwent.

(a) Test ????0 ∶ ????????????????∶???????????????? ≥ ????????????????????∶???????????????? at the ???? = 0.05 level.

(b) Compute the ????-value associated with the test statistic in part (a).

(c) Is there sufficient statistical evidence to conclude the proportion of patients having septoplasty is higher in the LWI group? Why?

(d) Test ????0 ∶ ????????????????∶???????????????? ≥ ????????????????????∶???????????????? at the ???? = 0.05 level.

(e) Compute the ????-value associated with the test statistic in part (d).

(f) Is there sufficient statistical evidence to conclude the proportion of patients having turbinate reduction is higher in the LWI group? Why?