The mean ± sd of In [calcium intake (mg)] among 25 females, 12 to 14 years of age, below the poverty level is 6.56 ± 0.64. Similarly, the mean± 1 sd of In [calcium intake (mg)] among 40 females, 12 to 14 years of age among the poverty level is 6.80 ± 0.76.
Question: what is the appropriate procedure to test for significant difference in means between two groups? Implement the procedure using the critical-value method and what is the p-value?