Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Question
For the numbers 116.0, 97.9, 114.2, 106.8 and 108.3, use the Q-test, decide whether the number 97.9 should be discarded.
Transcribed Image Text:“t" test table
Values of t for v Degrees of Freedom for Various Confidence Levels
Confidence Level, 90%
95%
99%
99.5%
127.32
14.089
7.453
63.657
6.314
2.920
2.353
12.706
4.303
3.182
2.776
1
9.925
2
3
5.841
4
2.132
4.604
5.598
4.032
4.773
2.571
2.447
2.365
2.015
4.317
3.707
3.500
3.355
3.250
1.943
4.029
3.832
1.895
1.860
1.833
1.812
2.306
2.262
2.228
2.131
3.690
3.581
3.252
3.153
9.
10
3.169
2.947
2.845
2.787
2.576
15
1.753
20
1.725
2.086
25
1.708
2.060
3.078
1.645
1.960
2.807
*y - N -1 - degrees of freedom.
Transcribed Image Text:"Q" test table
Rejection Quotient, Q, at Different Confidence Limits
Confidence level
No. of
Observations
3
0.941
0.970
0.994
0.926
4
0.765
0.829
5
0.642
0.710
0.821
6
0.560
0.625
0.740
7
0.507
0.568
0.526
0.493
0.466
0.384
0.680
8
0.468
0.437
0.634
0.598
10
15
0.412
0.568
0.338
0.475
20
0.300
0.277
0.260
0.342
0.425
25
0.317
0.393
30
0.298
0.372
"Adapted from D. B. Rorabacher, Anal. Chem., 63 (1981) 139.
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