Table 3
Results of one-sided t-tests.
| FRUITY | |||
|---|---|---|---|
| Element | t-statistic | p-value | μA=μB? |
| Y | −1.1 | 0.14 | possibly |
| Mo | −5.7 | 3.3e-07 | no |
| La | 3.3 | 7.8e-04 | no |
| Rb | −2.0 | 0.025 | no |
| Nb | −2.5 | 7.1e-03 | no |
| Sm | −9.4 | 7.0e-13 | no |
| Monash | |||
|---|---|---|---|
| Element | t-statistic | p-value | μA=μB? |
| Y | −0.8 | 0.22 | possibly |
| Mo | −4.9 | 6.1e-06 | no |
| La | 3.4 | 6.6e-04 | no |
| Nb | −1.8 | 0.041 | no |
| Rb | −1.5 | 0.065 | possibly |
| Sm | −9.1 | 4.2e-12 | no |
Notes. We performed a one-sided t-test in order to test our null hypothesis that the means of the elemental abundances are the same for the two groups of Ba stars and list the outcome, which is the t-statistic, and certainty level, which is the p-value for the FRUITY and Monash classifications. If the p-value was below our confidence interval of 0.05, then we rejected the null hypothesis, which is indicated in the right-most column of the table.
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