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, 12-14 years og age, above the povery level is 6.80 +/ 0.75.
What is the appropriate procedure to test for a significant in different means between the 2 age groups. What is the p-value corresponding to your this answer and compute a 95% CI for the difference in means between the two groups.