You want to compare the times of two biochemical reactions involving yeast. Since yeast is a living organism, the reactions have a lot of intrinsic variability, and you would like to understand whether there is any difference in the variability of the reaction times. For the 1st reaction, you have collected a sample of 12 reaction times, which give a mean of 5.38 hours and a standard deviation of 0.42 hours. For the 2nd reaction, you have collected a sample of 8 reaction times, which give a mean of 5.52 hours and a standard deviation of 0.6 hours. What is the critical value corresponding to a level of significance of 0.05 (rounded to 2 decimal places)