Choose a textile manufacturing company in India .Usually not more than one line is used for one product, because no matter how well the process is controlled ,differences will appear in the shade of the dye from one line to another. You have to choose any four dyeing line .The shade is kept as uniform as possible by minimizing the variance of the brightness of the shade on all cloth produced. Conduct an ANOVA test of the brightness of the cloth from the four lines. Take random samples from each line and measure the brightness. The measurement is on a 0 to 100 scale. The Sample data format is as follows: Line1 Line 2 Line 3 Line 4 1 66.55 66.16 68.36 72.32 2 3 1. Conduct the test at the 5% Significance Level, and report your conclusion. 2. Which pairs of lines have significant differences in their average brightness? 3. Stopping a line to adjust its average brightness is costly. If only one line can be stopped and adjusted ,which one should it be? 4. To what average brightness value should it be adjusted to minimize the variance in the cloth produced