Listed below are speeds (mi/h) measured from traffic on a busy highway. This simple random sample was obtained at 3:30 P.M. on a weekday. Use the sample data to construct a 98% confidence interval estimate of the population standard deviation. 61 64 64 56 64 55 60 59 60 70 59 68 O E Click the icon to view the table of Chi-Square critical values. The confidence interval estimate is mi/h
Listed below are speeds (mi/h) measured from traffic on a busy highway. This simple random sample was obtained at 3:30 P.M. on a weekday. Use the sample data to construct a 98% confidence interval estimate of the population standard deviation. 61 64 64 56 64 55 60 59 60 70 59 68 O E Click the icon to view the table of Chi-Square critical values. The confidence interval estimate is mi/h
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:Listed below are speeds (mi/h) measured from traffic on a busy highway. This simple random sample was obtained at 3:30 P.M. on a weekday. Use the sample data to construct a 98% confidence interval estimate of the population standard
deviation.
61
64
64
56
64 55
60
59
60
70
59
68 D
= Click the icon to view the table of Chi-Square critical values.
The confidence interval estimate is mi/h <o< mi/h.
(Round to one decimal place as needed.)
Does the confidence interval describe the standard deviation for all times during the week? Choose the correct answer below.
O A. Yes. The confidence interval describes the standard deviation for all times during the week.
O B. No. The confidence interval is an estimate of the standard deviation of the population of speeds at 3:30 on a weekday, not other times.
Transcribed Image Text:Listed below are spe
Area to the right of the critical value
bulatic
deviation.
61
64 64
Chi-Square (X2) Distribution
Click the icon to
Area to the Right of the Critical Value
Degrees of
Freedom
Degrees of
Freedom
The confidence inter
0.995
0.99
0.975
0.95
0.90
0.10
0.05
0.025
0.01
0.005
(Round to one decim
0.001
0.004
0.016
2.706
3.841
5.024
6.635
7.879
1.
Does the confidence
2
0.010
0.020
0.051
0.103
0.211
4.605
5.991
7.378
9.210
10.597
O A. Yes. The con
0.072
0.115
0.216
0.352
0.584
6.251
7.815
9.348
11.345
12.838
3
4.
0.207
0.297
0.484
0.711
1.064
7.779
9.488
11.143
13.277
14.860
4.
O B. No. The confi
0.412
0.554
0.831
1.145
1.610
9.236
11.071
12.833
15.086
16.750
0.676
0.872
1.237
1.635
2.204
10.645
12.592
14.449
16.812
18.548
6.
7
0.989
1.239
1.690
2.167
2.833
12.017
14.067
16.013
18.475
20.278
7
8.
1.344
1.646
2.180
2.733
3.490
13.362
15.507
17.535
20.090
21.955
8.
9
1.735
2.088
2.700
3.325
4.168
14.684
16.919
19.023
21.666
23.589
10
2.156
2.558
3.247
3.940
4.865
15.987
18.307
20.483
23.209
25.188
10
11
2.603
3.053
3.816
4.575
5.578
17.275
19.675
21.920
24.725
26.757
11
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