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TABLE A.7 Critical values of t (from the 3rd edition textbook)
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Confidence Interval Question and I have already attached Z table and T table. Please use these tables I attached if need to.

Strategic business planning is required for the successful transfer of control between generations in family-owned companies. However, a survey of 315 privately held family firms whose annual turnover exceeded one million dollars it was found that 80 had no strategic business plan. Assuming that simple random sampling was employed to determine the sample for the survey, estimate with 95% confidence the proportion of family-owned companies operating without strategic business plans. Give the upper limit only and report your answer correct to three decimal places.
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

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This question was answered on: Feb 21, 2020

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