On a standardized spatial skills task, normative data reveal that people typically get : = 15 correct solutions.

On a standardized spatial skills task, normative data reveal that people typically get : = 15 correct solutions. A psychologist tests n = 7 individuals who have brain injuries in the right cerebral hemisphere. For the following data, determine whether or not right-hemisphere damage results in significantly reduced performance on the spatial skills task. Test with alpha (") set at .05 with one tail. The data are as follows: 12, 16, 9, 8, 10, 17, 10.