in an experiment on learning 70 rats were taught tonavigate a maze during a 3 week training period. half the rats(n=35) were randomly selected to receive cocaine injections for aweek while the other half received sodium placebos.
after the drug treatment the rats were then tested inthe maze and their response times were recorded. for rats whoreceived cocaine the sample mean was 16.83 seconds and ss=903.04
for the rats who received the placebo the sample meanwas 10.60 seconds and ss=380.46
a) what is the tables value of the t statistic at the.05 level
b) what is the calculated value of the t statistic
c) is the null hypothesis accepted or rejected at the.05 level
