The mean +/- 1 sd of ln (calcium intake) among 25 females, 12-14 years old, below the poverty level is 6.56 +/- .64. Similarly, the mean +/- 1 sd of ln (calcium intake) among 40 females, 12-14 years old, above the poverty line is 6.8 +/- .76. Would you use a paired t test or a t test for independent samples to answer this question?

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