statistics

Leslie took two midterm exams and earned the following scores: 82 on the chemistry exam
(class distribution: μ = 75, σ = 6.25) and 63 on the physics exam (class distribution: μ = 59,
σ = 3.57). Rounding to two decimal points, on which exam should Leslie get the higher
grade?
a. Chemistry
b. Physics
c. The two exam scores are equivalent.
d. Cannot answer without additional information

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  1. z-score for chemistry = (82-75)/6.25 = 1.12
    z-score for physics = (63-59)/3.57 = 1.12044

    I would consider the difference insignificant, so the two scores would be equivalent.

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