Certain Electric Power Tools, Battery Cartridges, and ... - USITC

291. In Dr. Sorenson's Study S, a total of 2,798 interviews werecompleted in all 5 metropolitan areas. This was an average of 560 in eachmetropolitan area. (CPX 89(e), p. 11; CPF SM 73). Mr. Bunge testifiedthat Dr. Sorensen's sample size was adequate for the Study S, as well asfor Study C discussed below. (Bunge, Tr. 2672).292. Respondents also allege that the survey was improperly weighted infavor of a younger audience allegedly targeted by Makita. Although the agequotas may not have been truly representative of the relevant universe, Dr.Sorensen's age quota was engaged to eliminate interviewer selection-bias,rather than to reflect actual demographic statistics, and a slightlyyounger-aged sample, as a function of correct Makita identifications, doesnot clearly favor Makita.In the preliminary study, older people had thehighest and second highest incidence of Makita identifications; in thefinal study the results were somewhat different in this respect. (Sorensen,Tr. at 2047-2048, 3595, 3600-02; Bunge, Tr. 2618).293. Study S was a "random intercept survey." (CXA 10, Sorensen W.S.,at 13).Survey respondents were intercepted in an area with no stimuliconcerning electric power tools, and asked screener questions to see ifthey fit in the universe.Mr. Bunge found Dr. Sorensen's selection of theintercept technique to be acceptable. (CPX 89(e), pp. 13-14 and Ex. A, p.3; Sorenren, Tr. 2078; Bunge, Tr. 2682).294. Qualifying respondents were taken to a closed-off interviewinglocation. (CPX 89(e), p. 17; Sorensen, Tr. 2081). The interviews wereconducted in cubicles or. small rooms within each of the interviewingfacilities, still with no stimuli.Each cubicle or room contained anumbered masked MAKITA tool covered with a plain unmarked box or opaque89