Question: Surfer Dude swimsuit company plans to produce a new line of quick-dry swimsuits. Three textile companies are competing for the company's quick-dry fabric contract. To check the fabrics of the three companies, Surfer Dude selected 10 random swatches of fabric from each company, soaked them with water, and then measured the amount of time (in seconds) each swatch took to dry when exposed to sun and a temperature of 80°F. The following table contains the amount of time (in seconds) each of these swatches took to dry
Using the 5% significance level, test the null hypothesis that the mean drying times for all such fabric produced by the three companies are the same.