his Quiz: 10 pls possible Which is relatively better a score of 76 on a psycholo

Question

his Quiz: 10 pls possible Which is relatively better a score of 76 on a psychology lest or a score of 40 on an economics eer? Scores on the paychology et hve a mean of 94 and a and a standard deviation of 8 Choose the correct answer below A. The psychology test score is relatively better because its z score is gieater than the z score for the economics test score O B. The economics test score is relatively better because its z scoce is less than the z score for the paychology test score C. D. The economics test score is relatively boner because its z score is greater than the z score for the psychology test score The psychology test score b relatrely bettor because ts z score i, less han hez score ir h" economics test score Cack so serect your answer

Explanation / Answer

z= (X - mean)/sd
z-score for psychology = (76 - 94)/12 = -1.5
z-score for Economics = (40 - 50)/8 = -1.25

higher the z-score better is performance

-1.25 > -1.5
economics is better
hence option C) is correct

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