Question

1. A researcher wanted to determine the extent to which Tylenol PM influenced people’s reaction times. He had 10 participants complete a reaction time measure (higher scores mean slower responses) before taking Tylenol PM and then again one hour after they had taken the drug. Was there a significantly difference in their reaction time?

Pre Test	Post Test
100	125
78	85
89	90
110	150
80	90
95	99
87	87
100	150
75	80
88	100

Perform an appropriate two-tailed test of the significance of the mean difference.

Hypotheses:                      

t _obs=                         

t_crit=                               

df =                       

Mean difference =  

Experimental conclusion (Write out):

Find the 95% CI for this data:

Answer 1