Question: Calcium Intake and Age for Women Between the Ages of 20-88 yrs.

Ilich-Ernst et al. in their paper “Critical Factors for Bone Health in Women across the Age Span: How Important is Muscle Mass?” in Medscape Women’s Health eJournal (2002) investigated dietary intake of calcium among a cross section of 113 healthy women ages 20-88. The researchers formed four age groups as follows: Group A (20 – 45.9 years), Group B (46.0 – 55.9) years, Group C (56.0 – 65.9) years, and Group D (66+ years). Calcium from food intake was measured in mg/day and the results are contained in the file Calcium Intake.JMP.

a) Is there evidence to suggest that calcium intake differs significantly across the age groups? Conduct an appropriate test to answer this question. Be sure to check assumptions required for your analysis. (4 pts.)

b) If there are significant differences, which age groups significantly differ in terms of

there mean calcium content? Also quantify and discuss any significant differences
you find. (4 pts.)

c) Write a short summary of your findings from parts (a) and (b). (2 pts.)