Several employees have submitted different methods of assembling a

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Several employees have submitted different methods of assembling a Subassembly. Sample data for each method are:
Minutes Required for Assembly
Sample Lind’s Szabo’s Carl’s Manley’s
Number Method Method Method Method
1 16.6 22.4 31.4 18.4
2 17.0 21.5 33.4 19.6
3 16.9 22.6 30.1 17.6
a. what is the null hypothesis?
b. What is the critical value of the test statistic at the 5% level of significance?
c. How many degrees of freedom are there for the numerator and denominator.
d. what is the computed value of the test statistic?
e. What is the decision?