1. In order to evaluate a spectrophotometric method for thedetermination of titanium, the method was applied to alloy samplescontaining difference certified amounts of titanium. The results(%Ti) are shown below.
Sample CertifiedValue Mean Standard Deviation
1 0.496 0.482 0.0257
2 0.995 1.009 0.0248
3 1.493 1.505 0.0287
4 1.990 2.002 0.0212
For each alloy, eight replicate determinations were made. Foreach alloy, test whether the mean value differs significantly fromthe certified value.
