Carry out the statistical test and state your conclusions.

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
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Part 5
Question 4
A study was carried out to determine whether the resistance of the
control circuits in a machine are lower when the machine motor is
running. To ivestigate this question, a set of the control circuits was
tested as follows. Their resistance was measured while the machine
motor was not running for a certain period of time and then again
Page 4
while the motor was running. The values found are listed in worksheet
'Dataset4', with kilo-Ohms as the unit of measurement.
1. Set up the structure of an appropriate statistical test to determine
whether the resistance of the control circuit in a machine is lower
when the machine motor is running.
2. Explain how the order of subtraction chosen to calculate the dif-
ferences will influence the structure of the test.
3. Give a reason why the data is measured with the engine not run-
ning first and then with the engine running.
4. Explain how knowing the mean of the differences in advance
would influence the structure of your statistical test.
5. Carry out the statistical test and state your conclusions.
Transcribed Image Text:Question 4 A study was carried out to determine whether the resistance of the control circuits in a machine are lower when the machine motor is running. To ivestigate this question, a set of the control circuits was tested as follows. Their resistance was measured while the machine motor was not running for a certain period of time and then again Page 4 while the motor was running. The values found are listed in worksheet 'Dataset4', with kilo-Ohms as the unit of measurement. 1. Set up the structure of an appropriate statistical test to determine whether the resistance of the control circuit in a machine is lower when the machine motor is running. 2. Explain how the order of subtraction chosen to calculate the dif- ferences will influence the structure of the test. 3. Give a reason why the data is measured with the engine not run- ning first and then with the engine running. 4. Explain how knowing the mean of the differences in advance would influence the structure of your statistical test. 5. Carry out the statistical test and state your conclusions.
C
Motor running
Motor not running
13.76
13.49-
14.00
13.68
13.78
13.42
13.54
13.30
13.54
13.26
13.42
13.17
13.42
13.06
13.18
12.78
13.16
12.87
12.96
12.62
12.74
12.35
12.70
12.27
12.46
12.10
12.30
11.98
12.32
11.94
12.22
11.76
12.14
11.57
12.38
11.74
13.84
13.32
13.84
13.36
Datagat 1
Date
Datacot
Transcribed Image Text:C Motor running Motor not running 13.76 13.49- 14.00 13.68 13.78 13.42 13.54 13.30 13.54 13.26 13.42 13.17 13.42 13.06 13.18 12.78 13.16 12.87 12.96 12.62 12.74 12.35 12.70 12.27 12.46 12.10 12.30 11.98 12.32 11.94 12.22 11.76 12.14 11.57 12.38 11.74 13.84 13.32 13.84 13.36 Datagat 1 Date Datacot
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