Before purchasing videoconferencing equipment, a company tested its current internal computer network. The tests measured how rapidly data moved through its network given the current demand on the network. Twenty files ranging in size from 20 to 100 megabytes (MB) were transmitted over the network at various times of day, and the time to send the files (in seconds) recorded in the accompanying data table. The time is given as the number of hours past 8 A.M. on the day of the test. Complete parts (a) through (e). Click the icon to view the data.
Before purchasing videoconferencing equipment, a company tested its current internal computer network. The tests measured how rapidly data moved through its network given the current demand on the network. Twenty files ranging in size from 20 to 100 megabytes (MB) were transmitted over the network at various times of day, and the time to send the files (in seconds) recorded in the accompanying data table. The time is given as the number of hours past 8 A.M. on the day of the test. Complete parts (a) through (e). Click the icon to view the data.
Chapter10: Exponential And Logarithmic Functions
Section10.5: Solve Exponential And Logarithmic Equations
Problem 10.88TI: Researchers recorded that a certain bacteria population declined from 700,000 to 400,000 in 5 hours...
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A) In the screenshot i provided
B) Does either explanatory variable improve the fit of the model that uses the other? Use a test statistic for each. Use α=0.05.
Transcribed Image Text:Before purchasing videoconferencing equipment, a company tested its current internal computer network. The tests measured how rapidly data moved through its network given the current demand on the network. Twenty files ranging in size from 20 to
100 megabytes (MB) were transmitted over the network at various times of day, and the time to send the files (in seconds) recorded in the accompanying data table. The time is given as the number of hours past 8 A.M. on the day of the test. Complete
parts (a) through (e).
Click the icon to view the data.
(a) Fit the multiple regression of Transfer Time on File Size and Hours past 8. Does the model, taken collectively, explain statistically significant variation in transfer time? Use a = 0.05.
because F = with p-value
▼ 0.05.
(Round to one decimal place as needed.)
Data Table
Transfer Time (sec) File Size (MB)
Hours past 8
18.4
21
0.00
16.4
24
0.25
15.2
28
0.50
16.6
26
15.5
21.3
17.5
18.3
25.3
20.8
19.4
0.75
1.00
1.25
1.50
1.75
29
31
35
39
52
2.00
2.25
2.50
54
58
21.5
22.5
22.4
68
2.75
3.00
3.25
3.50
64
70
25.7
74
28.1
87
3.75
4.00
4.25
4.50
4.75
33.2
88
28.6
91
24.8
93
31.8
99
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