A 23 experiment was performed by an industrial engineer and the results are given in Table 4.16. Half of the experiment was done on one day and the remaining half on the next day. (a) Compute the main...

A 23 experiment was performed by an industrial engineer and the results are

given in Table 4.16. Half of the experiment was done on one day and the

remaining half on the next day.

(a) Compute the main effect of task.

(b) Use a half-normal plot to detect significant factorial effects. Compare

your finding with those based on the IER version of Lenth’s method at

an appropriate 𝛼 level.

(c) With the timing mechanism operating properly, the standard deviation of

the readings of average response time is known to be about 1 (𝜎 = 1).