On a standardized spatial skills task, normative data reveal that people typically get μ = 13 correct solutions. A rehabilitation psychologist tests 16 individuals who have brain injuries in the right cerebral hemisphere. Use the data presented below to determine whether right-hemisphere damage has significantly reduced performance on the spatial skills task. Lower scores indicate poorer spatial performance. Is the performance of this sample significantly lowerthan the normal population? Spatial skills scores for sample: 11, 13, 12, 10, 12, 13, 14, 11, 14, 13, 15, 13, 12, 12, 10, 12
Problem 1: Brain Damage & Spatial Skills
On a standardized spatial skills task, normative data reveal that people typically get μ = 13 correct solutions. A rehabilitation psychologist tests 16 individuals who have brain injuries in the right cerebral hemisphere. Use the data presented below to determine whether right-hemisphere damage has significantly reduced performance on the spatial skills task. Lower scores indicate poorer spatial performance. Is the performance of this sample significantly lowerthan the normal population?
Spatial skills scores for sample: 11, 13, 12, 10, 12, 13, 14, 11, 14, 13, 15, 13, 12, 12, 10, 12
Identify the:
Indep. Variable Brain Injuries Dep.variable Performance of Spatial skills
State Hypotheses: H0: Ho = 13 H1: H1 > 13
State Hypotheses in words.
H0: The null hypothesis would be that the performance of the sample equal to the normal population that have no brain damage
H1: The alternative would be that the performance of the sample would be significantly lower to the normal population that have no brain damage
Proper t-test: One- Sample t test One-tailed or two-tailed? One tailed
Summarize the results of the statistical test and what it means in this study using APA-style.
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