For the experiment described in Exercise 12.8, what null and alternative hypotheses would be appropriate for the
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Breaking Strengths (Pounds) of 10 Rivets from Supplier A 517 484 463 452 502 447 48 500 485566 Supplier B 479 49 488 430 482 457 424 488526 455 Supplier C 435 44480 465 435 430 465514463 510 Suppler D 526 537 443 505 468 470 533 481 477 490
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