If someone could walk me through this, it would be very helpful. Thanks!

Half of the players on the high school soccer team went to a soccer camp during the summer. The group that went to soccer camp had an average of 6.1 goals during the season. The group that did not attend soccer camp had an average of 5.3 goals during the season. To determine if the results are significant, the data are re-randomized and the differences of the means are shown in the dot plot. Determine whether the difference in the means of the two groups is significant based on the line plot. 0.5 0.6 0.7 0.8 0.9 1.0 1.1 1.2 1.3 1.4 1.5 Difference of Means