In a study of mating calls in the gray tree frogs Hyla hrysoscelis and Hyla versicolor, Gerhart (1994)2 reports that in a location in Lousiana the following data on the length of male advertisement calls have been collected:

Sample size Average duration SD of Duration Duration range
Hyla chrysoscelis 43 0.5 0.18 0.36-1.27
Hyla versicolor 12 0.54 0.14 0.36-0.75

The two species cannot be distinguished by external morphology, but H. chrysoscelis are diploids while H. versicolor are tetraploids. The triploid crosses exhibit high mortality in larval stages, and if they attain sexual maturity, they are sterile. Females responding to the mating calls try to avoid mismatches Based on the data summaries provided, test whether the length of call is a discriminatory characteristic? Use α = 0.05.