(a) Find the t-value such that the area in the right tail is 0.20 with 15 degrees of freedom. (Round to three decimal places as needed.)

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Solve this question please
Determine the t-value in each of the cases.
Click the icon to view the table of areas under the t-distribution..
(a) Find the t-value such that the area in the right tail is 0.20 with 15 degrees of freedom.
(Round to three decimal places as needed.)
Transcribed Image Text:Determine the t-value in each of the cases. Click the icon to view the table of areas under the t-distribution.. (a) Find the t-value such that the area in the right tail is 0.20 with 15 degrees of freedom. (Round to three decimal places as needed.)
0.727
0.920
1.156
1.476
2.015
2.571
2.757
3.365
4,032
4.773
5.893
6.869
6.
0.718
0.711
0.706
0.703
0.700
0.906
0.896
0.889
0.883
0.879
1.134
1.119
1.440
1.415
1.397
1.383
1.372
1.943
1.895
1.860
1.833
1.812
2.447
2.365
2.306
2.262
2.228
2.612
2.517
1.108
1.100
1.093
2.449
2.398
2.359
3.143
2.998
2.896
2.821
2.764
3.707
3.499
3.355
3.250
4.317
4.029
3.833
3.690
3.581
5.208
4.785
4.501
4,297
5.959
5.408
5.041
4.781
4.587
10
Area in
3.169
4.144
11
12
0.697
0.695
0.694
0.692
0.691
0.876
0.873
0.870
0.868
1.088
1.083
1.363
1.356
1.350
1.345
1.341
1.796
1.782
1.771
1.761
1.753
right tail
2.201
2.179
2.160
2.145
2.131
2.328
2.303
2.282
2.718
2.681
2.650
2.624
2.602
3.106
3.055
3.012
2.977
2.947
3.497
3.428
3.372
3.326
4.025
3.930
3.852
3.787
3.733
4.437
4.318
4.221
13
1.079
14
15
1.076
2.264
4.140
0.866
1.074
2.249
3.286
4.073
Table VI
16
0.690
0.865
0.863
0.862
1.071
1.069
1.067
1.337
1.333
1.330
1.328
1.325
1.746
1.740
1.734
1.729
1.725
2.120
2.110
2.101
2.093
2.086
2.235
2.224
2.214
2.205
2.197
2.583
2.567
2.552
2.539
2.528
2.921
2.898
2.878
2.861
2.845
3.252
3.222
3.197
3.174
3.153
3.686
17
18
19
20
0.689
0.688
0.688
0.687
4.015
3.965
3.922
3.883
3.850
t-Distribution
3.646
3.610
3.579
3.552
Area in Right Tail
0.861
1.066
0.15
0.05
0.025
0.02
0.01
0.005
0.0025
0.001
0.0005
0.860
1.064
df
0.25
0.20
0.10
21
0.686
0.859
0.858
0.858
0.857
0.856
1.063
1.061
1.060
1.059
1.323
1.321
1.319
1.721
636.619
31.599
12.924
8.610
6.869
2.080
2.074
2.069
2.064
2.060
2.189
2.183
2.177
2.172
2.167
2.518
2,508
2.500
2.492
2.485
127.321
14.089
7.453
5.598
4.773
318.309
22.327
10.215
7.173
5.893
2.831
2.819
3.135
3.119
3.104
3.527
3.505
3.485
3.467
3.819
3.792
1.963
1.386
1.250
1.190
1.156
3.078
1.886
1.638
1.533
1.476
6.314
2.920
2.353
2.132
2.015
12.706
4.303
3.182
2.776
2.571
15.894
4.849
3.482
2.999
2.757
31.821
6.965
4.541
3.747
3.365
63.657
9.925
5.841
4.604
4.032
1.000
1
0.816
0.765
1.376
1.061
0.978
0.941
0.920
22
0.686
1.717
2.
23
0.685
1.714
3.
0.741
0.727
2.807
2.797
2.787
3.768
3.745
3.725
24
0.685
1.318
1.711
3.091
25
0.684
1.058
1.316
1.708
3.078
3.450
5.208 . 5.959
4.785
4.501
4.297
4.144
26
0.684
0.856
0.855
0.855
0.854
1.058
1.057
1.056
1.055
1.055
1.315
3.707
3.499
3.355
3.250
3.169
1.706
1.703
1.943
1.895
1.860
1.833
1.812
2.447
2.365
2.306
2.262
2.228
2.612
2.517
2.449
2.398
2.359
3.143
2.998
2.896
2.821
2.764
4.317
4.029
3.833
3.690
3.581
2.056
2.052
2.048
2.045
2.042
2.162
2.158
2.154
2.150
2.147
2.479
2.473
2.467
2.462
2.457
2.779
2.771
2.763
2.756
2.750
3.067
3.057
3,047
3.038
3.030
3.435
3.421
3.408
3.396
3.385
3.707
1.134
1.119
1.108
1.100
1.093
1.440
1.415
1.397
1.383
1.372
0.718
6.
0.711
8.
0.906
0.896
0.889
0.883
0.879
5.408
5.041
4.781
4.587
27
28
29
0.684
1.314
1.313
1.311
1.310
3.690
3.674
3.659
0.683
0.706
0.703
0.700
1.701
1.699
1.697
0,683
30
0.683
0.854
10
3.646
4.437
4.318
4.221
4.140
4.073
4.025
3.930
3.852
3.787
3.733
3.686
3.646
3.610
3.579
3.552
2.328
2.303
2.282
2.264
2.249
2.718
2.681
2.650
2.624
2.602
3.106
3.055
3.012
2.977
2.947
3.497
3.428
3.372
3.326
3.286
31
32
33
34
0.682
0.682
0.682
0.682
0.682
0.853
0.853
1.796
1.782
1.771
1.761
1.753
2.201
2.179
2.160
2.145
1.054
1.309
1.309
1.308
1.307
1.696
0.876
0.873
0.870
0.868
0.866
1.363
1.356
1.350
1.345
1.341
2.040
2.037
2.035
2.032
2.030
2.144
1.088
1.083
1.079
1.076
1.074
2.453
2.449
2.445
2.441
2.438
2.744
2.738
2.733
2.728
2.724
3.022
0.697
0.695
0.694
0.692
0.691
3.375
3.365
11
12
13
14
15
1.054
1.053
1.052
1.052
3.633
3.622
3.611
3.601
3.591
1.694
0.853
0.852
0.852
1.692
1.691
1.690
2.141
2.138
2.136
2.133
3.015
3.008
3.002
2.996
3.356
3.348
3.340
2.131
35
1.306
2.583
2.567
2.552
2.539
2.528
3.252
3.222
3.197
3.174
3.153
4.015
3.965
3.922
3.883
3.850
2.921
2.898
2.878
2.861
2.845
2.831
2.819
2.807
2.797
2.787
2.235
2.224
2.214
2.205
2.197
1.746
2.120
2.110
2.101
2.093
1.337
0.865
0.863
0.862
0.861
0.860
1.071
1.069
1.067
1.066
1.064
0.690
36
0.681
16
17
18
0.852
0.851
0.851
0.851
0.851
1.052
1.051
1.051
1.050
1.050
1.306
1.305
1.304
1.304
1.303
1.688
1.687
1.686
1.685
1.684
2.028
2.026
2.024
2.023
2.021
2.131
2.129
2.127
2.125
2.123
2.434
2.431
2.429
2.426
2.423
2.719
2.715
2.712
2.708
2.704
2.990
2.985
2.980
2.976
2.971
3.333
3.326
3.319
3.313
3.307
3.582
3.574
3.566
3.558
3.551
1.333 1.740
1.734
37
0.689
0.688
0.688
20
1.330
1.328 1.729
1.725
0.681
0.681
0.681
38
19
39
0.687
1.325
2.086
40
0.681
21
22
23
24
25
0.686
0.686
0.685
0.685
0.684
0.859
0.858
0.858
0.857
0.856
1.063
1.061
1.060
1.059
1.058
1.323
1.321
1.319
1.721
1.717
1.714
1.711
1.708
2.080
2.074
2.069
2.064
2.189
2.183
2.177
2.172
2.167
2.518
2.508
2.500
2.492
2.485
3.135
3.119
3.104
3.091
3.078
3.527
3.505
3.485
3.467
3.450
3.819
3.792
3.768
3.745
3.725
50
60
70
80
90
0.679
0.679
0.678
0.678
0.677
0.849
0.848
0.847
0.846
0.846
1.047
1.045
1.044
1.043
1.042
1.299
1.296
1.294
1.292
1.676
1.671
1.667
2.009
2.000
2.109
2.099
2.093
2.088
2.084
2.403
2.390
2.381
2.374
2.678
2.660
2.648
2.639
2.937
2.915
2.899
2.887
2.878
3.261
3.232
3.211
3.195
3.183
3.496
3.460
1.318
1.316
1.994
1.990
1.987
3.435
3.416
3.402
2.060
1.664
3.707
3.690
3.674
3.659
1.291
1.662
3.067
3.057
3.047
3.038
3.030
3.435
3.421
3.408
3.396
3.385
2.368
2.632
26
27
28
29
0.684
0.684
0.683
0.683
0.683
0.856
0.855
0.855
0.854
0.854
1.058
1.057
1.056
1.055
1.055
1.315
1.314
1.313
1.311
1.310
1.706
1.703
1.701
1.699
1.697
2.056
2.052
2.048
2.045
2.042
2.162
2.158
2.154
2.150
2.147
2.479
2.473
2.467
2.462
2.457
2.779
2.771
2.763
2.756
2.750
0.677
0.675
0.674
1.042
1.037
1.036
100
0.845
0.842
0.842
1.290
1.282
1.282
1.660
1.646
1.645
1.984
1.962
1.960
2.081
2.056
2.054
2.364
2.330
2.326
2.626
2.581
2.576
2.871
2.813
2.807
3.174
3.098
3.090
3.390
3.300
3.291
000
3.646
30
2.453
2.449
3.022
3.015
3.375
3.365
3.633
3.622
2.144
2.744
ir
0.25
0.20
0.15
0.10
0.05
0.025
0.02
0.01
0.005
0.0025
0.001
0.0005
0.853
0.853
1.054
1.054
1.309
1.309
1.696
1.694
2.040
2.037
0.682
31
32
2.141
2.738
0.682
Area in Right Tail
Transcribed Image Text:0.727 0.920 1.156 1.476 2.015 2.571 2.757 3.365 4,032 4.773 5.893 6.869 6. 0.718 0.711 0.706 0.703 0.700 0.906 0.896 0.889 0.883 0.879 1.134 1.119 1.440 1.415 1.397 1.383 1.372 1.943 1.895 1.860 1.833 1.812 2.447 2.365 2.306 2.262 2.228 2.612 2.517 1.108 1.100 1.093 2.449 2.398 2.359 3.143 2.998 2.896 2.821 2.764 3.707 3.499 3.355 3.250 4.317 4.029 3.833 3.690 3.581 5.208 4.785 4.501 4,297 5.959 5.408 5.041 4.781 4.587 10 Area in 3.169 4.144 11 12 0.697 0.695 0.694 0.692 0.691 0.876 0.873 0.870 0.868 1.088 1.083 1.363 1.356 1.350 1.345 1.341 1.796 1.782 1.771 1.761 1.753 right tail 2.201 2.179 2.160 2.145 2.131 2.328 2.303 2.282 2.718 2.681 2.650 2.624 2.602 3.106 3.055 3.012 2.977 2.947 3.497 3.428 3.372 3.326 4.025 3.930 3.852 3.787 3.733 4.437 4.318 4.221 13 1.079 14 15 1.076 2.264 4.140 0.866 1.074 2.249 3.286 4.073 Table VI 16 0.690 0.865 0.863 0.862 1.071 1.069 1.067 1.337 1.333 1.330 1.328 1.325 1.746 1.740 1.734 1.729 1.725 2.120 2.110 2.101 2.093 2.086 2.235 2.224 2.214 2.205 2.197 2.583 2.567 2.552 2.539 2.528 2.921 2.898 2.878 2.861 2.845 3.252 3.222 3.197 3.174 3.153 3.686 17 18 19 20 0.689 0.688 0.688 0.687 4.015 3.965 3.922 3.883 3.850 t-Distribution 3.646 3.610 3.579 3.552 Area in Right Tail 0.861 1.066 0.15 0.05 0.025 0.02 0.01 0.005 0.0025 0.001 0.0005 0.860 1.064 df 0.25 0.20 0.10 21 0.686 0.859 0.858 0.858 0.857 0.856 1.063 1.061 1.060 1.059 1.323 1.321 1.319 1.721 636.619 31.599 12.924 8.610 6.869 2.080 2.074 2.069 2.064 2.060 2.189 2.183 2.177 2.172 2.167 2.518 2,508 2.500 2.492 2.485 127.321 14.089 7.453 5.598 4.773 318.309 22.327 10.215 7.173 5.893 2.831 2.819 3.135 3.119 3.104 3.527 3.505 3.485 3.467 3.819 3.792 1.963 1.386 1.250 1.190 1.156 3.078 1.886 1.638 1.533 1.476 6.314 2.920 2.353 2.132 2.015 12.706 4.303 3.182 2.776 2.571 15.894 4.849 3.482 2.999 2.757 31.821 6.965 4.541 3.747 3.365 63.657 9.925 5.841 4.604 4.032 1.000 1 0.816 0.765 1.376 1.061 0.978 0.941 0.920 22 0.686 1.717 2. 23 0.685 1.714 3. 0.741 0.727 2.807 2.797 2.787 3.768 3.745 3.725 24 0.685 1.318 1.711 3.091 25 0.684 1.058 1.316 1.708 3.078 3.450 5.208 . 5.959 4.785 4.501 4.297 4.144 26 0.684 0.856 0.855 0.855 0.854 1.058 1.057 1.056 1.055 1.055 1.315 3.707 3.499 3.355 3.250 3.169 1.706 1.703 1.943 1.895 1.860 1.833 1.812 2.447 2.365 2.306 2.262 2.228 2.612 2.517 2.449 2.398 2.359 3.143 2.998 2.896 2.821 2.764 4.317 4.029 3.833 3.690 3.581 2.056 2.052 2.048 2.045 2.042 2.162 2.158 2.154 2.150 2.147 2.479 2.473 2.467 2.462 2.457 2.779 2.771 2.763 2.756 2.750 3.067 3.057 3,047 3.038 3.030 3.435 3.421 3.408 3.396 3.385 3.707 1.134 1.119 1.108 1.100 1.093 1.440 1.415 1.397 1.383 1.372 0.718 6. 0.711 8. 0.906 0.896 0.889 0.883 0.879 5.408 5.041 4.781 4.587 27 28 29 0.684 1.314 1.313 1.311 1.310 3.690 3.674 3.659 0.683 0.706 0.703 0.700 1.701 1.699 1.697 0,683 30 0.683 0.854 10 3.646 4.437 4.318 4.221 4.140 4.073 4.025 3.930 3.852 3.787 3.733 3.686 3.646 3.610 3.579 3.552 2.328 2.303 2.282 2.264 2.249 2.718 2.681 2.650 2.624 2.602 3.106 3.055 3.012 2.977 2.947 3.497 3.428 3.372 3.326 3.286 31 32 33 34 0.682 0.682 0.682 0.682 0.682 0.853 0.853 1.796 1.782 1.771 1.761 1.753 2.201 2.179 2.160 2.145 1.054 1.309 1.309 1.308 1.307 1.696 0.876 0.873 0.870 0.868 0.866 1.363 1.356 1.350 1.345 1.341 2.040 2.037 2.035 2.032 2.030 2.144 1.088 1.083 1.079 1.076 1.074 2.453 2.449 2.445 2.441 2.438 2.744 2.738 2.733 2.728 2.724 3.022 0.697 0.695 0.694 0.692 0.691 3.375 3.365 11 12 13 14 15 1.054 1.053 1.052 1.052 3.633 3.622 3.611 3.601 3.591 1.694 0.853 0.852 0.852 1.692 1.691 1.690 2.141 2.138 2.136 2.133 3.015 3.008 3.002 2.996 3.356 3.348 3.340 2.131 35 1.306 2.583 2.567 2.552 2.539 2.528 3.252 3.222 3.197 3.174 3.153 4.015 3.965 3.922 3.883 3.850 2.921 2.898 2.878 2.861 2.845 2.831 2.819 2.807 2.797 2.787 2.235 2.224 2.214 2.205 2.197 1.746 2.120 2.110 2.101 2.093 1.337 0.865 0.863 0.862 0.861 0.860 1.071 1.069 1.067 1.066 1.064 0.690 36 0.681 16 17 18 0.852 0.851 0.851 0.851 0.851 1.052 1.051 1.051 1.050 1.050 1.306 1.305 1.304 1.304 1.303 1.688 1.687 1.686 1.685 1.684 2.028 2.026 2.024 2.023 2.021 2.131 2.129 2.127 2.125 2.123 2.434 2.431 2.429 2.426 2.423 2.719 2.715 2.712 2.708 2.704 2.990 2.985 2.980 2.976 2.971 3.333 3.326 3.319 3.313 3.307 3.582 3.574 3.566 3.558 3.551 1.333 1.740 1.734 37 0.689 0.688 0.688 20 1.330 1.328 1.729 1.725 0.681 0.681 0.681 38 19 39 0.687 1.325 2.086 40 0.681 21 22 23 24 25 0.686 0.686 0.685 0.685 0.684 0.859 0.858 0.858 0.857 0.856 1.063 1.061 1.060 1.059 1.058 1.323 1.321 1.319 1.721 1.717 1.714 1.711 1.708 2.080 2.074 2.069 2.064 2.189 2.183 2.177 2.172 2.167 2.518 2.508 2.500 2.492 2.485 3.135 3.119 3.104 3.091 3.078 3.527 3.505 3.485 3.467 3.450 3.819 3.792 3.768 3.745 3.725 50 60 70 80 90 0.679 0.679 0.678 0.678 0.677 0.849 0.848 0.847 0.846 0.846 1.047 1.045 1.044 1.043 1.042 1.299 1.296 1.294 1.292 1.676 1.671 1.667 2.009 2.000 2.109 2.099 2.093 2.088 2.084 2.403 2.390 2.381 2.374 2.678 2.660 2.648 2.639 2.937 2.915 2.899 2.887 2.878 3.261 3.232 3.211 3.195 3.183 3.496 3.460 1.318 1.316 1.994 1.990 1.987 3.435 3.416 3.402 2.060 1.664 3.707 3.690 3.674 3.659 1.291 1.662 3.067 3.057 3.047 3.038 3.030 3.435 3.421 3.408 3.396 3.385 2.368 2.632 26 27 28 29 0.684 0.684 0.683 0.683 0.683 0.856 0.855 0.855 0.854 0.854 1.058 1.057 1.056 1.055 1.055 1.315 1.314 1.313 1.311 1.310 1.706 1.703 1.701 1.699 1.697 2.056 2.052 2.048 2.045 2.042 2.162 2.158 2.154 2.150 2.147 2.479 2.473 2.467 2.462 2.457 2.779 2.771 2.763 2.756 2.750 0.677 0.675 0.674 1.042 1.037 1.036 100 0.845 0.842 0.842 1.290 1.282 1.282 1.660 1.646 1.645 1.984 1.962 1.960 2.081 2.056 2.054 2.364 2.330 2.326 2.626 2.581 2.576 2.871 2.813 2.807 3.174 3.098 3.090 3.390 3.300 3.291 000 3.646 30 2.453 2.449 3.022 3.015 3.375 3.365 3.633 3.622 2.144 2.744 ir 0.25 0.20 0.15 0.10 0.05 0.025 0.02 0.01 0.005 0.0025 0.001 0.0005 0.853 0.853 1.054 1.054 1.309 1.309 1.696 1.694 2.040 2.037 0.682 31 32 2.141 2.738 0.682 Area in Right Tail
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