A social worker participating and observing with the purpose of gathering descriptions of ...

A social worker participating and observing with the purpose of gathering descriptions of
  activities, behaviors, or any aspect of observable human experience is conducting what?
 
  a. Sampling
  b. Hypothesizing
  c. Fieldwork
  d. Design

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For all normal curves, one standard deviation above and below the mean constitutes
  roughly 95 of cases.
 
  Indicate whether the statement is true or false

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The _______________ provides the overall structure in which to construct a research and
  evaluation plan.
 
  a. Sample
  b. Measurement
  c. Research Design
  d. Hypothesis