A study is performed to determine how alcoholaffects the brain's response to sound. Using appropriate control procedures, the researchers measure brain responses in 6 participants both beforeand after the participants drink an alcoholicbeverage.The results are as follows:

Participant No.BeforeAfter

15.805.90

25.886.05

35.385.64

45.405.58

55.906.05

65.715.87

Determine whether or not alcoholic ingestion affects brain response to sound.