Question 549666: for each of the following, identify the exam score that should lead to the better grade. in each case, explain your answer.
a. a score of x=56, on a exam with u=50 and 0= 4, or a score of x=60 on an exam with u =50 and o =20.
b. a score of x =40 on a exam with u=45 and 0=2, or a score of x=60 on a exam with u=70 and o=20.
c. a score of x=62, on an exam with u=50 and o=8 or a score of x=23 on an exam with u=20 and o=2.
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! for each of the following, identify the exam score that should lead to the better grade. in each case, explain your answer.
a. a score of x=56, on a exam with u=50 and 0= 4, or a score of x=60 on an exam with u =50 and o =20.
b. a score of x =40 on a exam with u=45 and 0=2, or a score of x=60 on a exam with u=70 and o=20.
c. a score of x=62, on an exam with u=50 and o=8 or a score of x=23 on an exam with u=20 and o=2.
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For each of these, find the z-score using z(x)=(x-u)/sigma.
Then compare the z-scores to determine the highest grade.
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Cheers,
Stan H.
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