Lysann Damish and her colleagues XXXXXXXXXXwanted to find out if belief in luck improved performance. They recruited 28 students (using random selection) who were then randomly assigned to be in one...

Lysann Damish and her colleagues (2010) wanted to find out if belief in luck improved performance.  They recruited 28 students (using random selection) who were then randomly assigned to be in one of two groups.  Both groups were asked to perform a 10-trial putting task where the goal was to put a golf ball into a cup that was situated 100 cm (39.37 inches) away.  Group 1 was the “lucky” group.  This group was told that the golf ball they were using had been “a lucky ball” in previous tests.  The second group was simply handed to golf ball and asked to put (the “neutral” group).  The number of successful putts in 10 trials was counted for each group.

What statistical test should be used and why?