QuestionFind the best grading parameters for a score of $X=65$:
1. $\mu=60$, $\sigma=5$
2. $\mu=60$, $\sigma=10$
3. $\mu=70$, $\sigma=5$
4. $\mu=70$, $\sigma=10$

Studdy Solution
Now that we have calculated the z-scores for each set of parameters, we can determine which set gives the best grade. The best grade corresponds to the highest z-score.
The z-scores are $Z=$, $Z=0.5$, $Z3=-$, and $Z4=-0.5$. Therefore, the set of parameters that gives the best grade is $\mu=60, \sigma=5$.