Refer to the accompanying data display that results from a sample of airport data speeds in Mbps. Complete parts (a) through (c) below. Click the icon view at distribution table. a. What is the number of degrees of freedom that should be used for finding the critical value ta/2? df= (Type a whole number.) b. Find the critical value ta/2 corresponding to a 95% confidence level. ta/2 = (Round to two decimal places as needed.) c. Give a brief general description of the number of degrees of freedom. CIER OA. The number of degrees of freedom for a collection f sample data is the number of sample values that are determined after certain restrictions have been imposed on all data values.. OB. The number of degrees of freedom for a collection of sample data is the number of sample values that can vary after certain restrictions have been imposed on all data values. OC. The number of degrees of freedom for a collection of sample data is the number of unique, non-repeated sample values. OD. The number of degrees of freedom for a collection of sample data is the total number of sample values. (13.0 x=1 Sx= n=5
Refer to the accompanying data display that results from a sample of airport data speeds in Mbps. Complete parts (a) through (c) below. Click the icon view at distribution table. a. What is the number of degrees of freedom that should be used for finding the critical value ta/2? df= (Type a whole number.) b. Find the critical value ta/2 corresponding to a 95% confidence level. ta/2 = (Round to two decimal places as needed.) c. Give a brief general description of the number of degrees of freedom. CIER OA. The number of degrees of freedom for a collection f sample data is the number of sample values that are determined after certain restrictions have been imposed on all data values.. OB. The number of degrees of freedom for a collection of sample data is the number of sample values that can vary after certain restrictions have been imposed on all data values. OC. The number of degrees of freedom for a collection of sample data is the number of unique, non-repeated sample values. OD. The number of degrees of freedom for a collection of sample data is the total number of sample values. (13.0 x=1 Sx= n=5
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:Refer to the accompanying data display that results from a sample of airport data speeds in Mbps. Complete parts (a) through (c) below.
Click the icon to view a t distribution table.
a. What is the number of degrees of freedom that should be used for finding the critical value tx/2?
df=
(Type a whole number.)
b. Find the critical value to/2 corresponding to a 95% confidence level.
ta/2=
(Round to two decimal places as needed.)
c. Give a brief general description of the number of degrees of freedom.
O A. The number of degrees of freedom for a collection of sample data is the number of sample values that are determined after certain restrictions have been imposed on all data values. .
B. The number of degrees of freedom for a collection of sample data is the number of sample values that can vary after certain restrictions have been imposed on all data values.
C. The number of degrees of freedom for a collection of sample data is the number of unique, non-repeated sample values.
OD. The number of degrees of freedom for a collection of sample data is the total number of sample values.
Tinterval
(13.046,22.15)
x = 17.598
Sx = 16.01712719
n = 50
Transcribed Image Text:Critical t values
α
Critical t value
(negative)
Left tail
Right tail
α
Degrees of
Freedom
1
2
3
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
******
27
t Distribution: Critical t Values
0.005
0.01
63.657
9.925
5.841
4.604
4.032
3.707
3.499
3.355
3.250
3.169
3.106
3.035
3.012
2.977
2.947
2.921
2.898
2.878
2.861
2.845
2.831
2.819
2.807
2.797
2.787
2.779
2.771
0.01
0.02
31.821
6.965
4.541
3.747
3.365
1
3.143
2.998
2.896
2.821
2.764
2.718
2.681
2.650
2.624
2.602
2.583
2.567
2.552
2.539
2.528
2.518
2.508
2.500
2.492
2.485
2.479
2.473
Area in One Tail
0.025
Area in Two Tails
0.05
12.706
4.303
3.182
2.776
2.571
2.447
2.365
2.306
2.262
2.228
2.201
2.179
2.160
2.145
2.131
2.120
2.110
2.101
2.093
2.086
2.080
2.074
2.069
2.064
2.060
2.056
2.052
3
0.05
0.10
6.314
2.920
2.353
2.132
2.015
1.943
1.895
1.860
1.833
1.812
1.796
1.782
1.771
1.761
1.753
1.746
1:740
1.734
1.729
1.725
1.721
1.717
1.714
1.711
1.708
1.706
1.703
0.10
A
0.20
3.078
1.886
1.638
1.533
1.476
1.440
1.415
1.397
1.383
1.372
1.363
1.356
1.350
1.345
1.341
1.337
1.333
1.330
1.328
1.325
1.323
1.321
1.319
1.318
1.316
1.315
1.314
Degrees of
Freedom
1
2
3
4
18
19
20
21
10
11
12
13
14
15
16
17
22
6
7
23
24
25
26
27
9
-
X
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