Sonal received a 76 on their chemistry exam (class u = 72, σ = 8). Ang received a 82 on their media exam (class u = 80, σ = 4). Who did better on their exam relative to the rest of their respective classmates?

Sonal received a 76 on their chemistry exam (class u = 72, σ = 8). Ang received a 82 on their media exam (class u = 80, σ = 4). Who did better on their exam relative to the rest of their respective classmates?

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Question

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Sonal received a 76 on their chemistry exam (class u = 72, σ = 8).

Ang received a 82 on their media exam (class u = 80, σ = 4).

Who did better on their exam relative to the rest of their respective classmates?

Expert Solution

Step 1

Consider that the mean and standard deviation of a random variable X are µ and σ, respectively.

Thus, the z-score of that random variable X is z = (X – µ)/σ.

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