(Solution) - For each of the following identify the exam score that -(2025 Original AI-Free Solution)

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Academic Level: Undergrad. (yrs 3-4)

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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 = 74 on an exam with M = 82 and ? = 8; or a score of X = 40 on an exam with ? = 50 and ? = 20.
b. A score of X = 51 on an exam with ? = 45 and ? = 2; or a score of X = 90 on an exam with ? = 70 and ? = 20.
c. A score of X = 62 on an exam with ? = 50 and ? = 8; or a score of X = 23 on an exam with ? = 20 and ? = 2.