The results of a test for the significance of the difference in average income for random samples of males and females indicates males earning an average of about $12,000 more per year. The Z score is 8.09. Given these results, which of the following is a reasonable conclusion? O The difference is statistically significant, large, and important The difference is not statistically significant and was probably caused by randon chance There is no gender gap in income in Canada O This difference is statistically significant but quite small