The mean 1 sd of ln calcium intake mg among 25 females 12 to

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

Solution