10.68 A manufacturer of stereo amplifiers has three assembly lines. We want to test the hypothesis that the three lines do not differ with respect to the number of defectives produced. Independent samples of 30 amplifiers each are selected from the output of the lines, and the number of defectives is observed. The data are as follows:

Conduct a test of the hypothesis given above at the 5% significance level.

Transcribed Image Text:

Line I || III Number of Defectives 6 5 9 Sample Size 30 30 30