In comparing the variability of the tensile strength of two kinds of structural steel, an experiment yielded the following results: n = 13, s 19.2, n2 = 16, and s2 = 3.5, where the units of measurement are 1,000 pounds per square inch. Assuming that the measurement constitute independent samples from two normal populations, test the null hypothesis of = 02 against the alternative of o2 at the 0.02 level of significance. =