The mean ±1 sd of ln [calcium intake (mg)] among 25 females, 12 to 14 years of a
ID: 3383243 • Letter: T
Question
The mean ±1 sd of ln [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 ln [calcium intake (mg)] among 40 females, 12 to 14 years of age, above the poverty level is 6.80 ± 0.76.
a.) Test for a significant difference between the variances of the two groups.
b.) What is the appropriate procedure to test for a significant difference in means between the two groups?
c.)Implement the procedure in Problem C using the critical-value method.
d.) Compute a 95% CI for the difference in means between the two groups
Explanation / Answer
The mean ±1 sd of ln [calcium intake (mg)] among 25 females, 12 to 14 years of a
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