45.

a. An experiment was carried out to investigate the effects on audio sensitivity of varying resistance (A), two capacitances (B, C), and inductance of a coil (D) in part of a television circuit. If four blocks were used with four treatments per block, and the defining effects for confounding were AB and CD, which treatments appeared in each block?

b. Suppose two replications of the experiment described in part

(a) were performed, resulting in the accompanying data. Obtain the ANOVA table, and test all relevant hypotheses at level .01.

Treat- Treatment xijkl1 xijkl2 ment xijkl1 xijkl2

(1) 618 598 d 598 585 a 583 560 ad 587 541 b 477 525 bd 480 508 ab 421 462 abd 462 449 c 601 595 cd 603 577 ac 550 589 acd 571 552 bc 505 484 bcd 502 508 abc 452 451 abcd 449 455