A school dentist wanted to test the claim, at = 0.05, that the number of cavities

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

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4 6 2 5 3 1 2 1 3 3 6. 2 6. 3 1 5 1 3. 2 3 7 1 5 1 6721 O223