The following data represent the age (in weeks) at which babies first crawl based on a survey of 12 mothers. The data are normally distributed and s = 10.129 weeks. Construct and interpret a 90% confidence interval for the population standard deviation of the age (in weeks) at which babies first crawl. 53 29 45 36 38 25 48 39 54 26 39 28 E Click the icon to view the table of critical values of the chi-square distribution. Select the correct choice below and fill in the answer boxes to complete your choice. (Use ascending order. Round to three decimal places as needed.) O A. There is 90% confidence that the population standard deviation is between and O B. There is a 90% probability that the true population standard deviation is between and O C. If repeated samples are taken, 90% of them will have the sample standard deviation between and.
The following data represent the age (in weeks) at which babies first crawl based on a survey of 12 mothers. The data are normally distributed and s = 10.129 weeks. Construct and interpret a 90% confidence interval for the population standard deviation of the age (in weeks) at which babies first crawl. 53 29 45 36 38 25 48 39 54 26 39 28 E Click the icon to view the table of critical values of the chi-square distribution. Select the correct choice below and fill in the answer boxes to complete your choice. (Use ascending order. Round to three decimal places as needed.) O A. There is 90% confidence that the population standard deviation is between and O B. There is a 90% probability that the true population standard deviation is between and O C. If repeated samples are taken, 90% of them will have the sample standard deviation between and.
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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Transcribed Image Text:The following data represent the age (in weeks) at which babies first crawl based on a survey of 12 mothers. The data are normally distributed and s = 10.129 weeks.
Construct and interpret a 90% confidence interval for the population standard deviation of the age (in weeks) at which babies first crawl.
53
29
45
36
38
25
48
39
54
26
39
28
Click the icon to view the table of critical values of the chi-square distribution.
Select the correct choice below and fill in the answer boxes to complete your choice.
(Use ascending order. Round to three decimal places as needed.)
O A. There is 90% confidence that the population standard deviation is between
and
B. There is a 90% probability that the true population standard deviation is between
and
O C. If repeated samples are taken, 90% of them will have the sample standard deviation between
and
Transcribed Image Text:Chi-Square Distribution Critical Values Table
Chi-Square (x) Distribution
Areato the Right of Critical Vahue
Degrees of
Freedom
0.995
0.99
0975
095
0.90
010
0.05
0.025
0.01
0.005
2.706
4.605
6.251
1
0.001
0.004
0.016
3.841
5.024
6.635
7879
0.010
0.072
0.061
0.216
0.484
0.103
0.352
0.711
1.145
5991
7815
0020
0.211
7.378
9.210
10.597
0.584
1.064
1.610
3
0.115
9.348
11.345
12.838
14.860
16.750
4
0.207
0297
7.779
9.488
11.143
12.833
13.277
5
0.412
0554
0.831
9.236
11.070
15.086
0.676
0.989
1.344
1.735
2.156
1.635
2.167
16.812
18.475
10.645
12592
14.067
15.507
16.919
18.548
0.872
1.239
1.646
1.237
1.690
2.204
14.449
16.013
17535
2.833
12.017
20278
13.362
14.684
15.987
21.955
23589
25188
2.180
2.733
3.325
3.490
20.090
4.168
4.865
2.088
2.700
19.023
21.666
10
2.558
3.247
3.940
18.307
20.483
23209
3.063
3.571
4.107
4.660
5.229
5.578
6.304
7042
19.675
21.026
22.362
23.685
24.996
2.603
3.816
4.575
5.226
5.892
6.571
7261
17275
18.549
19.812
21.064
22.307
24.725
26 217
27688
29.141
30578
26.757
28.300
29.819
11
21.920
12
13
3.074
3565
4.075
4.601
4.404
5.009
5.629
6.262
23.337
24.736
26.119
14
31.319
32.801
7.790
15
8.547
27.488
6.908
7564
5142
5.697
6.265
6.844
7434
5.812
6.408
7015
7633
8.260
7962
8.672
23.542
24.769
25.989
26.296
27587
28.869
28.845
34.267
35.718
37156
38.582
16
9.312
32.000
17
10.085
30.191
31.526
32.852
33.409
10.865
11.651
12.443
34.805
36.191
37566
18
8.231
9.390
19
8.907
10.117
27.204
30.144
20
9.591
10.851
28.412
31.410
34.170
39.997
11.591
29.615
32.671
33.924
35.172
36.415
37652
35.479
36.781
38.076
39.364
40.646
21
8.034
10.283
13.240
38.932
8.897
9.542
10.196
10.856
11.524
41.401
8.643
9.260
9.886
10.520
10.982
11.689
12.338
14.041
30.813
40.289
42.796
13.091
13.848
14.848
15.659
16.473
32.007
41638
44.181
45.559
46.928
12.401
33.196
42.980
25
13.120
14.611
34.382
44.314
15.379
16.151
16.928
11160
13.844
14.573
15.308
16.047
16.791
17.292
18.114
18.939
నర3
36.741
37.916
38885
41.923
43.195
44.461
45.722
46.979
45.642
46.963
26
12.198
48.290
49645
50993
52.336
53672
27
11808
12879
13.565
14.256
14.953
40.113
12.461
41.337
42557
43.773
28
48.278
29
30
19.768
20.599
49.588
50.892
13.121
17.708
18.493
39.087
13.787
40.256
26.509
34 764
29.051
37689
51.805
63167
22.164
55.758
67505
59.342
71 420
63.691
76154
66.766
79 490
40
20.707
24.433
32.357
50
27991
29 07
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