(d) A random sample of 8 observations are taken to determine if there is evidence that the average concentration of certain material less than 11ppm. By using level of significance, a = 0.05, test the claim. Observation 1 Concentration 11.0 Table Q5(d) 3 2 10.7 4 5 6 11.3 9.1 9.4 7.8 7 10.2 8 10.5

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(d)
A random sample of 8 observations are taken to determine if there is
evidence that the average concentration of certain material less than
11ppm. By using level of significance, a = 0.05, test the claim.
Observation 1
Concentration 11.0
Table Q5(d)
3
4
9.4 7.8
2
10.7
5
11.3
6
9.1
7
10.2
8
10.5
Transcribed Image Text:(d) A random sample of 8 observations are taken to determine if there is evidence that the average concentration of certain material less than 11ppm. By using level of significance, a = 0.05, test the claim. Observation 1 Concentration 11.0 Table Q5(d) 3 4 9.4 7.8 2 10.7 5 11.3 6 9.1 7 10.2 8 10.5
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