Dependent Sample t-Test Activity 1. You want to test a new therapy for globophobia (fear of balloons in general... this is different than phonophobia, which is the fear of the sound produced when popping balloons). You select five people and test their responses to a picture of balloons. Based on heart rate you develop a globophobia score that ranges from O (no fear) to 20 (terror). Following therapy, you get a second measure. NOTE: This is actually too small an n for a real study. Here are your data….. ID Before After Diff Diff-M (Diff-M)² Therapy Therapy Score 11 8. 16 11 20 15 ST 17 11 10 11

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Computation of T-Test 

Dependent Sample t-Test Activity
1. You want to test a new therapy for globophobia (fear of balloons
in general... this is different than phonophobia, which is the fear
of the sound produced when popping balloons).
You select five people and test their responses to a picture of balloons.
Based on heart rate you develop a globophobia score that ranges from
O (no fear) to 20 (terror). Following therapy, you get a second measure.
NOTE: This is actually too small an n for a real study.
Here are your data...
ID
Before
After
Diff
Diff - M
(Diff-M)²
Therapy
rec
Therapy
Score
A
11
16
11
C
STEP
20
15
17
11
the
10
11
Transcribed Image Text:Dependent Sample t-Test Activity 1. You want to test a new therapy for globophobia (fear of balloons in general... this is different than phonophobia, which is the fear of the sound produced when popping balloons). You select five people and test their responses to a picture of balloons. Based on heart rate you develop a globophobia score that ranges from O (no fear) to 20 (terror). Following therapy, you get a second measure. NOTE: This is actually too small an n for a real study. Here are your data... ID Before After Diff Diff - M (Diff-M)² Therapy rec Therapy Score A 11 16 11 C STEP 20 15 17 11 the 10 11
one-tail
0.1
0.05
0.025
0.01
0.005
0.001
0.0005
two-tails
0.2
0.1
0.05
0.02
0.01
0.002
0.001
DF
3.078
6.314
12.706
31.821
63.656
318.289
636.578
2
1.886
2.92
4.303
6.965
9.925
22.328
31.6
3
1.638
2.353
3.182
4.541
5.841
10.214
12.924
1.533
2.132
2.776
3.747
4.604
7.173
8.61
5
1.476
2.015
2.571
3.365
4.032
5.894
6.869
1.44
1.943
2.447
3.143
3.707
5.208
5.959
1.415
1.895
2.365
2.998
3.499
4.785
5.408
1.397
1.86
2.306
2.896
3.355
4.501
5.041
1.383
1.833
2.262
2.821
3.25
4.297
4.781
10
1.372
1.812
2.228
2.764
3.169
4.144
4.587
11
1.363
1.796
2.201
2.718
3.106
4.025
4.437
12
1.356
1.782
2.179
2.681
3.055
3.93
4.318
13
1.35
1.771
2.16
2.65
3.012
3.852
4.221
14
1.345
1.761
2.145
2.624
2.977
3.787
4.14
15
1.341
1.753
2.131
2.602
2.947
3.733
4.073
16
1.337
1.746
2.12
2.583
2.921
3.686
4.015
17
1.333
1.74
2.11
2.567
2.898
3.646
3.965
18
1.33
1.734
2.101
2.552
2.878
3.61
3.922
19
1.328
1.729
2.093
2.539
2.861
3.579
3.883
20
1.325
1.725
2.086
2.528
2.845
3.552
3.85
21
1.323
1.721
2.08
2.518
2.831
3.527
3.819
22
1.321
1.717
2.074
2.508
2.819
3.505
3.792
23
1.319
1.714
2.069
2.5
2.807
3.485
3.768
24
1.318
1.711
2.064
2.492
2.797
3.467
3.745
25
1.316
1.708
2.06
2.485
2.787
3.45
3.725
36
1.315
1.706
2.056
2.479
2.779
3.435
3.707
27
1.314
1.703
2.052
2.473
2.771
3.421
3.689
28
1.313
1.701
2.048
2.467
2.763
3.408
3.674
29
1.311
1.699
2.045
2.462
2.756
3.396
3.66
30
1.31
1.697
2.042
2.457
2.75
3.385
3.646
60
1.296
1.671
2
2.39
2.66
3.232
3.46
1.289
1.658
1.98
2.358
2.617
3.16
3.373
532 320.
1.282
1.646
1.962
2.33
2.581
3.098
3.3
Inf
1.282
1.645
1.96
2.326
2.576
3.091
3.291
Transcribed Image Text:one-tail 0.1 0.05 0.025 0.01 0.005 0.001 0.0005 two-tails 0.2 0.1 0.05 0.02 0.01 0.002 0.001 DF 3.078 6.314 12.706 31.821 63.656 318.289 636.578 2 1.886 2.92 4.303 6.965 9.925 22.328 31.6 3 1.638 2.353 3.182 4.541 5.841 10.214 12.924 1.533 2.132 2.776 3.747 4.604 7.173 8.61 5 1.476 2.015 2.571 3.365 4.032 5.894 6.869 1.44 1.943 2.447 3.143 3.707 5.208 5.959 1.415 1.895 2.365 2.998 3.499 4.785 5.408 1.397 1.86 2.306 2.896 3.355 4.501 5.041 1.383 1.833 2.262 2.821 3.25 4.297 4.781 10 1.372 1.812 2.228 2.764 3.169 4.144 4.587 11 1.363 1.796 2.201 2.718 3.106 4.025 4.437 12 1.356 1.782 2.179 2.681 3.055 3.93 4.318 13 1.35 1.771 2.16 2.65 3.012 3.852 4.221 14 1.345 1.761 2.145 2.624 2.977 3.787 4.14 15 1.341 1.753 2.131 2.602 2.947 3.733 4.073 16 1.337 1.746 2.12 2.583 2.921 3.686 4.015 17 1.333 1.74 2.11 2.567 2.898 3.646 3.965 18 1.33 1.734 2.101 2.552 2.878 3.61 3.922 19 1.328 1.729 2.093 2.539 2.861 3.579 3.883 20 1.325 1.725 2.086 2.528 2.845 3.552 3.85 21 1.323 1.721 2.08 2.518 2.831 3.527 3.819 22 1.321 1.717 2.074 2.508 2.819 3.505 3.792 23 1.319 1.714 2.069 2.5 2.807 3.485 3.768 24 1.318 1.711 2.064 2.492 2.797 3.467 3.745 25 1.316 1.708 2.06 2.485 2.787 3.45 3.725 36 1.315 1.706 2.056 2.479 2.779 3.435 3.707 27 1.314 1.703 2.052 2.473 2.771 3.421 3.689 28 1.313 1.701 2.048 2.467 2.763 3.408 3.674 29 1.311 1.699 2.045 2.462 2.756 3.396 3.66 30 1.31 1.697 2.042 2.457 2.75 3.385 3.646 60 1.296 1.671 2 2.39 2.66 3.232 3.46 1.289 1.658 1.98 2.358 2.617 3.16 3.373 532 320. 1.282 1.646 1.962 2.33 2.581 3.098 3.3 Inf 1.282 1.645 1.96 2.326 2.576 3.091 3.291
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