SOLUTION: Dave's GRE average score is 600 with standard deviation of 120 points. What is the standard score for a person who scores 730? Rita's GRE average score is 450 with standard deviati

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Question 1209043: Dave's GRE average score is 600 with standard deviation of 120 points. What is the standard score for a person who scores 730? Rita's GRE average score is 450 with standard deviation of 130 points. What is the standard score for a person who scores 720? Who did better on the GRE in terms of the mean?
Answer by ikleyn(52786) About Me  (Show Source):
You can put this solution on YOUR website!
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(a) Dave's GRE average score is 600 with standard deviation of 120 points.
What is the standard score for a person who scores 730?
(b) Rita's GRE average score is 450 with standard deviation of 130 points.
What is the standard score for a person who scores 720?
(c) Who did better on the GRE in terms of the mean?
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     Part (a)


standard score = %28observation+-+mean%29%2FSD = %28730-600%29%2F120 = 130%2F120 = 13%2F12 = 11%2F12 = 1.0833  (rounded).   ANSWER


Part (a) is completed.



     Part (b)


standard score = %28observation+-+mean%29%2FSD = %28720-450%29%2F130 = 270%2F130 = 27%2F13 = 21%2F13 = 2.0769  (rounded).   ANSWER


Part (b) is completed.



     Part (c)


In part (c) the question is posed in wrong way.

The correct question should ask "Who did better on the GRE in terms of standard scores ?"


The person who has higher standard scores did better.

So, the person of part (b) did better than the person of part (a).    ANSWER

Solved. All parts are answered.