4. Exercise 10.78 (p. 438) Alcohol and Reaction Times (Do the problem by hand. Use the p-value approach). To test the effect of ...

      4. Exercise 10.78 (p.  438) Alcohol and Reaction Times   (Do the   problem by hand. Use the p-value approach). To test the effect of alcohol in   increasing the reaction time to respond to a given stimulus, the reaction   times of seven people were measured. After consuming 3 ounces of 40% alcohol,   the reaction time for each of the seven people was measured again. Do the   following data indicate that the mean reaction time after consuming alcohol   was greater than the mean reaction time before consuming alcohol? Use α=.05   Person 1 2 3   4 5 6 7   Before 4 5 5   4 3 6 2   After 7 8 3   5 4 5 5