Each of the following is a calculated F statistic with its degrees of freedom. Using the F table, estimate the level of significance for each. You can do this by indicating whether its likelihood of occurring is greater than or less than a p level shown on the table. 

a. F = 4.11, with 3 df between and 30 df within 

b. F = 1.12, with 5 df between and 83 df within 

c. F = 2.28, with 4 df between and 42 df within