A leading paint manufacturer is interested in developing a new colour shade. He is interested in testing four different shades: dark, bright, light, and very light. A sample of 160 customers was shown these four shades and following results were obtained: 30 liked the dark shade, 45 liked the bright shade, 60 liked the light shade and the remaining liked the very light shade. The manufacturer wants to know whether the sample results indicate any preference towards the shade. Use Kolmogorov-Smirnov One Sample Test. Given at 5 percent significance level, the critical value of test statistic is equal to 0.1075