Assume a company quality inspector has just completed testing randomly selected fuel samples for the variability in ethanol levels, from two suppliers, and that the calculated value of the test statistic F is 12.05. Also assume the critical value of F is (3.06). Based on this information, which of the following conclusions would the quality control inspector make?
1. None of these
2. Fail to reject the null hypothesis and conclude the variability in ethanol levels differs for the two suppliers.
3. Reject the null hypothesis and conclude the variability in ethanol levels does not differ for the two suppliers.
4. Reject the null hypothesis and conclude the variability in ethanol levels differs for the two suppliers.
5. Fail to reject the null hypothesis and conclude the variability in ethanol levels does not differ for the two suppliers.