Do think pairing on technicians was worthwhile in this case

Reference no: EM131028773

A plant manager, in deciding whether to purchase a machine of design A or design B, checks the times for completing a certain task on each machine. Eight technicians were used in the experiment, with each technician using both machine A and machine B in a randomized order. The times (in seconds) required to complete the task are given in the accompanying table.

Techician	A	B
1	32	30
2	40	39
3	42	42
4	26	23
5	35	36
6	29	27
7	45	41
8	22	21

a Test to see if there is a significant difference between mean completion times, at the 5% significance level.

b Do you think pairing on technicians was worthwhile in this case? Explain.

c What assumptions are necessary for the test in part (a)?

Reference no: EM131028773

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