Do the two analytical methods provide results that are significantly different at the 95% confidence interval? Justify fully, showing all calculations, logic etc Cobalt is often added to steel in order to increase its hardness. The cobalt content of5 different steel samples was measured by titration and by spectroscopy (Table 2).Table 2: Cobalt content (in mg L) in 5 different steel samples.SampleTitrationSpectroscopy113413514415631261374125137137136

Data given n = 5 Confidence interval = 95%

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Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

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Do the two analytical methods provide results that are significantly different at the 95% confidence interval? Justify fully, showing all calculations, logic etc

Cobalt is often added to steel in order to increase its hardness. The cobalt content of
5 different steel samples was measured by titration and by spectroscopy (Table 2).
Table 2: Cobalt content (in mg L) in 5 different steel samples.
Sample
Titration
Spectroscopy
1
134
135
144
156
3
126
137
4
125
137
137
136

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