Good afternoon, could someone help me explain how the Krustall Walls test is applied for these exercises? :(

1. Example 14.1 In an experiment conducted to determine which of 3 different missile systems is preferable, the propellant burn rate was measured for 24 static starts. Four different types of fuel were used and the experiment generated duplicate observations of combustion rates for each combination of treatments. The data, already coded, are presented in Table 14.3. Test the following hypotheses: a) H0: there is no difference in the average propellant combustion rates when different missile systems are used, b) H0: there is no difference in the average combustion rates of the 4 types of propellant, c) H0: there is no interaction between the different missile systems and the different types of propellant.