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To find the percentage of students with GPAs at least 1.82, we first need to find the z-score of 1.82.
Z = (X - μ) / σ
Z = (1.82 - 2.62) / 0.4
Z = -0.8 / 0.4
Z = -2
Now, we can use the empirical rule to find the percentage of students with a z-score less than -2. According to the empirical rule:
- Approximately 2.5% of the data falls more than 2 standard deviations below the mean.
Therefore, approximately 2.5% of students have a GPA of at least 1.82.