The coloration of male guppies may affect the mating preference of the female guppy. To test this hypothesis, scientists first identified two types of guppies, Yarra and Paria, that display different colorations (“Evolutionary Mismatch of Mating Preferences and Male Colour Patterns in Guppies,” Animal Behaviour [1997]: 343–51). The relative area of orange was calculated for fish of each type. A random sample of 30 Yarra guppies resulted in a mean relative area of .106 and a standard deviation of .055. A random sample of 30 Paria guppies resulted in a mean relative area of .178 and a standard deviation .058. Is there evidence of a difference in coloration? Test the relevant hypotheses to determine whether the mean area of orange is different for the two types of guppies.