Young children need calcium in their diet to support the growth of their bones.

Question

Young children need calcium in their diet to support the growth of their bones. The Institute of Medicine provides guidelines for how much calcium should be consumed by people of different ages. One study examined whether or not a sample of children consumed an adequate amount of calcium based on these guidelines. Because there are different guidelines for children aged 5 to 10 years and those aged 11 to 13 years, the children were classified into these two age groups. Each student's calcium intake was classified as meeting or not meeting the guideline. There were 2,028 children in the study. Here are the data.

Age (years)
Met requirement 5 to 10 11 to 13
No 191 557
Yes 866 414

Identify the populations in the study. (Select all that apply.)
Children under the age of 18 in the study. Children 11 to 13 in the study.Children 5 to 10 years old.Children 5 to 10 in the study.Children 11 to 13 years old.Children under the age of 18. [Correct: Your answer is correct.]
How many children in each age group met the guidelines?
ages 5 to 10ages 11 to 13
How many children in each age group did not meet the guidelines?
ages 5 to 10ages 11 to 13
What was the sample size used in the study for each age group?
ages 5 to 10ages 11 to 13

Explanation / Answer

Populations in the study

Children 11 to 13 old
Children 5 to 10 old

children in age group met the guidelines
ages 5 to 10 = 866
ages 11 to 13 = 414

children in age group did not meet the guidelines
ages 5 to 10 = 191
ages 11 to 13 = 557

sample size used in the study for age group
ages 5 to 10 = 1057 (866 + 191)
ages 11 to 13 = 971 (414 + 557)

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