5. Bone mineral density (BMD) is a measure of bone strength. It is defined as the ratio of bone mass to the cross-sectional area of the bone that is scanned, and it is expressed in units of grams per square centimeter (g/cm²).Recent studies suggest that peak BMD in women is achieved between ages 15 and 40, and BMD declines afterage 45. Decreased BMD is associated with increased risk of bone fracture.In a recent study, the impact of regular physical exercise on women in differing stages of BMD developmentwas examined. A simple random sample of 59 women between the ages of 41 and 45 and with no major healthproblems were enrolled in the study. The women were classified into one of the two following groups, based ontheir level of exercise activity.• Sedentary: minimal participation in physical exercise in the past three years (This group contained31 women.)• Walkers: walk at an aerobic pace at least 135 minutes per week during the past three years (This groupcontained 28 women.) (b) There was some concern that women in the two groups may have different dietary habits that could affectBMD. For example, higher intake of milk or other foods and supplements that provide additional calciumto the body could increase BMD. To examine this possibility, the researchers also asked each woman in thestudy to report on weekly milk consumption when she was age 20 through age 29. The data were then usedto compute a value of calcium obtained from milk consumption for each woman in the study. BMD levelswere plotted against the calcium intake from consumption of milk for women in each of the groups. Theplots are shown below, with the least squares estimate of a regression line on each plot.BMDBONE MINERAL DENSITYFOR SEDENTARY WOMEN1.4+1.3-1.2-1.11.0-0 2 4 6 8 10 12 14 16Calcium fromMilk ConsumptionBMDBONE MINERAL DENSITYFOR WALKERS1.4+1.31.2.1.11.04 +0 2 4 6 8 10 12 14 16Calcium fromMilk ConsumptionWhat do the plots indicate about the relationship between BMD and calcium intake from milk consumptionfrom age 20 through age 29 ?

This question explores the relationship between bone density material (BDM) and calcium intake from…

Answered: (b) There was some concern that women…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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