Now assume you have 50 more participants to assign to two groups, but the 50 participants are matched in pairs on IQ. Designate the first pair as participants A 1 and A 2 , the second pair as B 1...

Now assume you have 50 more participants to assign to two groups, but the 50 participants are matched in pairs on IQ. Designate the first pair as participants A₁
and A₂, the second pair as B₁
and B₂, and so on. Use the table of random numbers to assign the pairs to the two groups.

Can ANOVA be used to test a null hypothesis in a within-subjects design? If so, are there any special steps that must be taken?