=+recorded. The accompanying data are approximate values read from a graph that appeared in the Nature article. Do these data support the researchers’ hypothesis that the mean percentage of the time spent with the previous partner is significantly greater for genetically altered voles than for voles that did not have the gene introduced? Test the relevant hypotheses using a 5 .05.

Percent of Time Spent with Previous Partner Genetically 59 62 73 80 84 85 89 92 Altered 92 93 100 Not Genetically 2 5 13 28 34 40 48 50 Altered 51 54 60 67 70 76 81 84 85 92 97 99