SOLUTION: Raul received a score of 75 on a history test for which the class mean was 70 with a standard deviation of 4. He received a score of 72 on a biology test for which the class mean w
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-> SOLUTION: Raul received a score of 75 on a history test for which the class mean was 70 with a standard deviation of 4. He received a score of 72 on a biology test for which the class mean w
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Question 1169255: Raul received a score of 75 on a history test for which the class mean was 70 with a standard deviation of 4. He received a score of 72 on a biology test for which the class mean was 70 with standard deviation 3. On which test did he do better relative to the rest of the class? Answer by Boreal(15235) (Show Source):
You can put this solution on YOUR website! z=(x-mean)/sd
history was 5/4 for z or 1.25
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biology was 2/3 for z or 0.67
he did better in history because the value of z was greater.
