Question: A school dentist wanted to test the claim, at significance level=0.05, that the number of cavities in fourth-grade students is random. 40 students were checked, and the number of cavities each had is shown here. Test for randomness of the values above or below the median.

0 4 6 0 6 2 5 3 1 5 1

2 2 1 3 7 3 6 0 2 6 0

2 3 1 5 2 1 3 0 2 3 7

3 1 5 1 1 2 2