The scores are the number of minutes needed by each participant to assemble a bike with two different sets of instructions:
instruction set 1 Instruction set 2
8 14
4 10
8 6
4 10
a. is there a significant difference in time for the two sets of instructions? Use a two tailed test at .05 level of significance.
b.Calculate the estimated Cohen’s d and r 2 to measure effect size for this study