Answer
95% of of eruptions last between 92 and 116 seconds.
Work Step by Step
Using the Empirical rule, we have:
x̅ - 2s = 104 - 2 (6.249) $\approx$ 92
x̅ + 2s = 104 + 2 (6.249) = $\approx$ 116
Hence, 95% of of eruptions last between 92 and 116 seconds. according to the Empirical Rule.