Tinterval Refer to the accompanying data display that results from a sample of airport data speeds in Mbps. Complete parts (a) through (c) below. (13.046,22.15) X= 17.598 Sx = 16.01712719 E Click the icon to view at distribution table. n= 50 a. What is the number of degrees of freedom that should be used for finding the critical value t/2? df = (Type a whole number.) b. Find the critical value ta/2 corresponding to a 95% confidence level. (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 unique, non-repeated sample 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 impose on all data values. OC. 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. O D. The number of degrees of freedom for a collection of sample data is the total number of sample values.
Tinterval Refer to the accompanying data display that results from a sample of airport data speeds in Mbps. Complete parts (a) through (c) below. (13.046,22.15) X= 17.598 Sx = 16.01712719 E Click the icon to view at distribution table. n= 50 a. What is the number of degrees of freedom that should be used for finding the critical value t/2? df = (Type a whole number.) b. Find the critical value ta/2 corresponding to a 95% confidence level. (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 unique, non-repeated sample 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 impose on all data values. OC. 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. O D. The number of degrees of freedom for a collection of sample data is the total number of sample values.
MATLAB: An Introduction with Applications
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Author:Amos Gilat
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Chapter1: Starting With Matlab
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Problem 1P
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Question
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Refer to the accompanying data display that results from a sample of airport data speeds in Mbps. Complete parts (a) through (c) below.
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t Distribution: Critical t Values
Area in One Tail
0.0050.010.0250.050.10
Area in Two Tails
Degrees of Freedom0.010.020.050.100.20
163.65731.82112.7066.3143.078
29.9256.9654.3032.9201.886
35.8414.5413.1822.3531.638
44.6043.7472.7762.1321.533
54.0323.3652.5712.0151.476
63.7073.1432.4471.9431.440
73.4992.9982.3651.8951.415
83.3552.8962.3061.8601.397
93.2502.8212.2621.8331.383
103.1692.7642.2281.8121.372
113.1062.7182.2011.7961.363
123.0552.6812.1791.7821.356
133.0122.6502.1601.7711.350
142.9772.6242.1451.7611.345
152.9472.6022.1311.7531.341
162.9212.5832.1201.7461.337
172.8982.5672.1101.7401.333
182.8782.5522.1011.7341.330
192.8612.5392.0931.7291.328
202.8452.5282.0861.7251.325
212.8312.5182.0801.7211.323
222.8192.5082.0741.7171.321
232.8072.5002.0691.7141.319
242.7972.4922.0641.7111.318
252.7872.4852.0601.7081.316
262.7792.4792.0561.7061.315
272.7712.4732.0521.7031.314
282.7632.4672.0481.7011.313
292.7562.4622.0451.6991.311
302.7502.4572.0421.6971.310
312.7442.4532.0401.6961.309
322.7382.4492.0371.6941.309
332.7332.4452.0351.6921.308
342.7282.4412.0321.6911.307
352.7242.4382.0301.6901.306
362.7192.4342.0281.6881.306
372.7152.4312.0261.6871.305
382.7122.4292.0241.6861.304
392.7082.4262.0231.6851.304
402.7042.4232.0211.6841.303
452.6902.4122.0141.6791.301
502.6782.4032.0091.6761.299
602.6602.3902.0001.6711.296
702.6482.3811.9941.6671.294
802.6392.3741.9901.6641.292
902.6322.3681.9871.6621.291
1002.6262.3641.9841.6601.290
2002.6012.3451.9721.6531.286
3002.5922.3391.9681.6501.284
4002.5882.3361.9661.6491.284
5002.5862.3341.9651.6481.283
10002.5812.3301.9621.6461.282
20002.5782.3281.9611.6461.282
Large2.5762.3261.9601.6451.282
Transcribed Image Text:TInterval
Refer to the accompanying data display that results from a sample of airport data speeds in Mbps. Complete parts (a) through (c)
below.
(13.046,22.15)
E Click the icon to view a t distribution table.
x= 17.598
Sx = 16.01712719
n= 50
a. What is the number of degrees of freedom that should be used for finding the critical value t,/2?
df =
(Type a whole number.)
b. Find the critical value t12 corresponding to a 95% confidence level.
(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 unique, non-repeated sample values.
O 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.
O C. 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.
O D. The number of degrees of freedom for a collection of sample data is the total number of sample values.
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