The International Dairy Foods Association (IDFA) wants to study the calcium intake of male teenagers. A random sample of

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The International Dairy Foods Association (IDFA) wants
to study the calcium intake of male teenagers. A random sample of
50 male teenagers was observed over a period of two weeks.
Researchers recorded whether they had sufficient, insufficient, or
deficient calcium intake. What is the variable of interest in the
study?
a) male teenager
b) number of milligrams of calcium consumed
c) level of calcium intake: sufficient, insufficient,
or deficient
d) whether the teenagers were male
e) the 50 randomly selected male teenagers
The International Dairy Foods Association (IDFA) wants
to study the calcium intake of male teenagers. A random sample of
50 male teenagers was observed over a period of two weeks.
Researchers recorded whether they had sufficient, insufficient, or
deficient calcium intake. What is the variable of interest in the
study?
a) a male teenager
b) number of milligrams of calcium consumed
c) level of calcium intake: sufficient, insufficient,
or deficient
d) whether the teenagers were male
e) the 50 randomly selected male teenagers