给定一组学生的考试分数，编写一个Python函数，计算并输出平均分、最高分和最低分。
考试分数列表，例如 [80, 90, 75, 85, 92]
```python
def score_stats(scores):
    average = sum(scores)/len(scores)
    highest = max(scores)
    lowest = min(scores)
    print("Average score: {:.2f}".format(average))
    print("Highest score: {}".format(highest))
    print("Lowest score: {}".format(lowest))

score_stats([80, 90, 75, 85, 92])
```
输出:
```
Average score: 84.40
Highest score: 92
Lowest score: 75
```