Statistics - Sampling Homework Help

Posted on 2014-04-03 06:27:00 in Statistics by MICHAEL

Refer to the Buena School District bus data. Information provided by manufacturers of school buses suggests the mean maintenance cost per month is $455 per bus. Use statistical software to find the mean and the standard deviation for the Buena buses. Does the Buena data seem to be in line with that reported by the manufacturer? Specifically, what is the probability of the sample mean being less than Buena’s, given the manufacturer’s data?



Maintenance

X2

329

503

505

466

359

546

427

474

382

422

433

474

558

561

357

329

497

459

355

489

436

455

514

503

380

432

478

406

471

444

493

452

461

496

469

442

414

459

457

462

570

439

369

390

469

381

501

432

392

441

448

468

467

478

515

411

504

504

392

423

410

529

477

540

450

390

424

433

428

494

396

458

493

475

476

403

337

492

426

449

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