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A non-profit organization is interested in identifying the need for subsidized childcare in a low-income neighborhood. They conduct phone interviews with 100 families who live there and find out that 25% of them need childcare.
a. What is the population of interest?
b. What is the sample?
c. Is their sampling technique a good way to represent the population of interest? Explain.
d. Is 25% a statistic or a parameter?
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