We Wish to Determine If Two Strains of Laboratory Rats

Short Answer

We wish to determine if two strains of laboratory rats differ in maze-running ability. Random samples of naive (never been experimented on) rats are selected from each strain, and each rat is run through a test maze until it can negotiate the maze with no errors on two consecutive trials. The following results are obtained (number of trials to learn):

(a)  Set up

and

. 
(b) Perform the test (α = .05) 
(c)  Draw final conclusions.