This is for ELEMENTARY DATA ANALYSIS Table 1 shows the carbon monoxide (CO) measurements in Shah Alam
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Question:
This is for ELEMENTARY DATA ANALYSIS
Table 1 shows the carbon monoxide (CO) measurements in Shah Alam air during 9am and 5pm for a randomly selected 10 days. Measurement are parts per million. The objective of the study is to see whether the CO concentrations at 9am is different from 5pm.
Table 1:
Day
9am
5pm
1
1.6
0.6
2
2.7
2.3
3
0.9
0.6
4
0.5
0.3
5
0.2
0.3
6
0.4
1.0
7
2.8
2.8
8
6.1
4.3
9
2.0
2.6
10
1.1
1.2
- Calculate the mean and standard deviation of CO concentrations for both hours.
- Assuming population variances are equal conduct an appropriate test to test whether there is a significant different of CO concentrations between 9am and 5pm ata= 0.05.
- Based on your answers in (a) and (b) summarize the different levels of CO concentrations between the two hours.
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