MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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Transcribed Image Text:Table of Critical t-Values
Area in
right tail
t-Distribution
Area in Right Tail
Degrees of
Freedom
0.25
0.20
0.15
0.10
0.05
0.025
0.02
0.01
0.005 0.0025
0.001 0.0005
1.963
3.078
6.314
1
2
3
1.000
0.816
0.765
0.741
0.727
1.376
1.061
0.978
0.941
0.920
1.386
1.250
1.190
1.156
1.886
1.638
1.533
1.476
2.920
2.353
2.132
2.015
12.706
4.303
3.182
15.894
4.849
3.482
2.999
31.821
6.965
4.541
3.747
3.365
63.657
9.925
5.841
4.604
4.032
127.321
14.089
7.453
5.598
318.309 636.619
31.599
12.924
8.610
6.869
22.327
10.215
2.776
2.5
7173
5.893
5
2.757
4.773
2.447
2.365
3.143
2.998
2.896
2.821
2.764
6
7
8
0.718
0.711
0.706
0.703
0.700
0.906
0.896
0.889
0.883
0.879
1.134
1.119
1.108
1.100
1.093
1.440
1.415
1.397
1.383
1.372
1.943
1.895
1.860
1.833
1.812
2.306
2.262
2.228
2.612
2.517
2.449
2.398
2.359
3.707
3.499
3.355
3.250
3.169
4.317
4.029
3.833
3.690
3.581
5.208
4.785
5.959
5.408
5.041
4.781
4.587
4.501
4.297
10
4.144
0.697
11
12
13
14
15
0.876
0.873
0.870
0.868
0.866
1.088
1.083
1.079
1.076
1.074
1.363
1.356
1.350
1.345
1.341
1.796
1.782
0.695
0.694
0.692
1.771
1.761
1.753
2.201
2.179
2.160
2.145
2.131
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
3.497
3.428
3.372
3.326
4.025
3.930
3.852
3.787
4.437
4.318
4.221
4.140
4.073
2.977
2.947
0.691
3.286
3.733
0.690
0.689
0.688
0.688
0.687
2.235
2.224
2.214
2.205
2.197
3.252
16
17
18
19
20
0.865
0.863
0.862
0.861
0.860
1.071
1.069
1.067
1.066
1.064
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
2.583
2.567
2.552
2.539
2.528
2.921
2.898
2.878
2.861
2.845
3.222
3.197
3.174
3.153
3.686
3.646
3.610
3.579
3.552
4.015
3.965
3.922
3.883
3.850
21
0.686
0.859
1.063
1.323
1.721
2.080
2.189
2.518
2.831
3.135
3.527
3.819
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Transcribed Image Text:A survey was conducted that asked 1012 people how many books they had read in the past year. Results indicated that x = 11.4 books and s = 16.6 books. Construct a 95% confidence interval for the mean number of books people
read. Interpret the interval.
E Click the icon to view the table of critical t-values.
Construct a 95% confidence interval for the mean number of books people read and interpret the result. Select the correct choice below and fill in the answer boxes to complete your choice.
(Use ascending order. Round to two decimal places as needed.)
O A. If repeated samples are taken, 95% of them will have a sample mean between
and
O B. There is a 95% probability that the true mean number of books read is between
and
O C. There is 95% confidence that the population mean number of books read is between
and
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