6) Two types of flares are tested for their burning times (in minutes) and sample results are given below.

To test the claim that the two populations have equal means using a 0.05 significance level, what procedure is most appropriate assuming the two brands have different population variances.
A) The independent t-test using the pooled variance estimate
B) The dependent (matched pairs) t-test
C) The F-test to compare population variances
D) The independent t-test using the Welch-Satterthwaite Approximation