#### Question Details

##### [solution] » TABLE A.7 Critical values of t (from the 3rd edition textbook)

Brief item decscription

Step-by-step solution file

Item details:

TABLE A.7 Critical values of t (from the 3rd edition textbook)
More:

Confidence Interval question and I have already attached Z table and T table down below. Please use these tables I attached only if need to .

Thank you

A sales consultant for Herron Pharmaceuticals wished to confirm that their packet of 24 paracetamol tablets was cheaper at the retail level than their rival product. The sales consultant collected price data from two independent samples, of size 19 for Herron and 26 for the rival company. These yielded an average and variance for the retail price of Herron's product of 335 cents and 58 cents squared respectively, and 385 cents and 61 cents squared for the rival. Under the usual assumptions, determine an 80% confidence interval for the price difference (use Herron minus rival) stating only the lower limit of the interval in cents (round to the nearest whole number).
TABLE A.7 Critical values of t

(from the 3rd edition textbook) Upper tail area (shaded)

0 tcrit t Upper tail areas df t.10 t.05 t.025 t.01 t.005 1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

37

38

39

40

41

42

43

44

45

46

47

48

49

50 3.078

1.886

1.638

1.533

1.476

1.440

1.415

1.397

1.383

1.372

1.363

1.356

1.350

1.345

1.341

1.337

1.333

1.330

1.328

1.325

1.323

1.321

1.319

1.318

1.316

1.315

1.314

1.313

1.311

1.310

1.309

1.309

1.308

1.307

1.306

1.306

1.305

1.304

1.304

1.303

1.303

1.302

1.302

1.301

1.301

1.300

1.300

1.299

1.299

1.299 6.314

2.920

2.353

2.132

2.015

1.943

1.895

1.860

1.833

1.812

1.796

1.782

1.771

1.761

1.753

1.746

1.740

1.734

1.729

1.725

1.721

1.717

1.714

1.711

1.708

1.706

1.703

1.701

1.699

1.697

1.696

1.694

1.692

1.691

1.690

1.688

1.687

1.686

1.685

1.684

1.683

1.682

1.681

1.680

1.679

1.679

1.678

1.677

1.677

1.676 12.706

4.303

3.182

2.776

2.571

2.447

2.365

2.306

2.262

2.228

2.201

2.179

2.160

2.145

2.131

2.120

2.110

2.101

2.093

2.086

2.080

2.074

2.069

2.064

2.060

2.056

2.052

2.048

2.045

2.042

2.040

2.037

2.035

2.032

2.030

2.028

2.026

2.024

2.023

2.021

2.020

2.018

2.017

2.015

2.014

2.013

2.012

2.011

2.010

2.009 31.821

6.965

4.541

3.747

3.365

3.143

2.998

2.896

2.821

2.764

2.718

2.681

2.650

2.624

2.602

2.583

2.567

2.552

2.539

2.528

2.518

2.508

2.500

2.492

2.485

2.479

2.473

2.467

2.462

2.457

2.453

2.449

2.445

2.441

2.438

2.434

2.431

2.429

2.426

2.423

2.421

2.418

2.416

2.414

2.412

2.410

2.408

2.407

2.405

2.403 63.657

9.925

5.841

4.604

4.032

3.707

3.499

3.355

3.250

3.169

3.106

3.055

3.012

2.977

2.947

2.921

2.898

2.878

2.861

2.845

2.831

2.819

2.807

2.797

2.787

2.779

2.771

2.763

2.756

2.750

2.744

2.738

2.733

2.728

2.724

2.719

2.715

2.712

2.708

2.704

2.701

2.698

2.695

2.692

2.690

2.687

2.685

2.682

2.680

2.678 770? Appendix t.001

318.309

22.327

10.215

7.173

5.893

5.208

4.785

4.501

4.297

4.144

4.025

3.930

3.852

3.787

3.733

3.686

3.646

3.610

3.579

3.552

3.527

3.505

3.485

3.467

3.450

3.435

3.421

3.408

3.396

3.385

3.375

3.365

3.356

3.348

3.340

3.333

3.326

3.319

3.313

3.307

3.301

3.296

3.291

3.286

3.281

3.277

3.273

3.269

3.265

0 tcrit t Upper tail areas df t.10 t.05 t.025 t.01 t.005 t.001 51

52

53

54

55

56

57

58

59

60

61

62

63

64

65

66

67

68

69

70

71

72

73

74

75

76

77

78

79

80

81

82

83

84

85

86

87

88

89

90

91

92

93

94

95

96

97

98

99

100

150

200 1.298

1.298

1.298

1.297

1.297

1.297

1.297

1.296

1.296

1.296

1.296

1.295

1.295

1.295

1.295

1.295

1.294

1.294

1.294

1.294

1.294

1.293

1.293

1.293

1.293

1.293

1.293

1.292

1.292

1.292

1.292

1.292

1.292

1.292

1.292

1.291

1.291

1.291

1.291

1.291

1.291

1.291

1.291

1.291

1.291

1.290

1.290

1.290

1.290

1.290

1.287

1.286

1.282 1.675

1.675

1.674

1.674

1.673

1.673

1.672

1.672

1.671

1.671

1.670

1.670

1.669

1.669

1.669

1.668

1.668

1.668

1.667

1.667

1.667

1.666

1.666

1.666

1.665

1.665

1.665

1.665

1.664

1.664

1.664

1.664

1.663

1.663

1.663

1.663

1.663

1.662

1.662

1.662

1.662

1.662

1.661

1.661

1.661

1.661

1.661

1.661

1.660

1.660

1.655

1.653

1.645 2.008

2.007

2.006

2.005

2.004

2.003

2.002

2.002

2.001

2.000

2.000

1.999

1.998

1.998

1.997

1.997

1.996

1.995

1.995

1.994

1.994

1.993

1.993

1.993

1.992

1.992

1.991

1.991

1.990

1.990

1.990

1.989

1.989

1.989

1.988

1.988

1.988

1.987

1.987

1.987

1.986

1.986

1.986

1.986

1.985

1.985

1.985

1.984

1.984

1.984

1.976

1.972

1.960 2.402

2.400

2.399

2.397

2.396

2.395

2.394

2.392

2.391

2.390

2.389

2.388

2.387

2.386

2.385

2.384

2.383

2.382

2.382

2.381

2.380

2.379

2.379

2.378

2.377

2.376

2.376

2.375

2.374

2.374

2.373

2.373

2.372

2.372

2.371

2.370

2.370

2.369

2.369

2.368

2.368

2.368

2.367

2.367

2.366

2.366

2.365

2.365

2.365

2.364

2.351

2.345

2.326 2.676

2.674

2.672

2.670

2.668

2.667

2.665

2.663

2.662

2.660

2.659

2.657

2.656

2.655

2.654

2.652

2.651

2.650

2.649

2.648

2.647

2.646

2.645

2.644

2.643

2.642

2.641

2.640

2.640

2.639

2.638

2.637

2.636

2.636

2.635

2.634

2.634

2.633

2.632

2.632

2.631

2.630

2.630

2.629

2.629

2.628

2.627

2.627

2.626

2.626

2.609

2.601

2.576 3.258

3.255

3.251

3.248

3.245

3.242

3.239

3.237

3.234

3.232

3.229

3.227

3.225

3.223

3.220

3.218

3.216

3.214

3.213

3.211

3.209

3.207

3.206

3.204

3.202

3.201

3.199

3.198

3.197

3.195

3.194

3.193

3.191

3.190

3.189

3.188

3.187

3.185

3.184

3.183

3.182

3.181

3.180

3.179

3.178

3.177

3.176

3.175

3.175

3.174

3.145

3.131

3.090 ? Appendix? 771

STATUS
QUALITY
Approved

This question was answered on: Feb 21, 2020

Solution~00066632451.zip (18.37 KB)