The quality control department of a motorcycle company classifies new motorcycles according to the number of defective components per motorcycle at an initial inspection. An improvement to the production process has been implemented, and, hopefully, there will be a change from the historical defective distribution: 71 = .80, 712 = .10, T3 = .05, TT4 = .03, and 775 = .02. A random sample of 300 motorcycles produced under the new system is classified as follows: Number of Defectives 0 1 2 3 4 or more Total Number of Motorcycles, na 238 32 12 13 5 300 At the a = .05 level, does there appear to be a change in the historical proportions of defectives?