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Questions and Answers

What is the main purpose of the simple experiment mentioned in the text?

  • To compare the effects of caffeine and sugar on anxiety
  • To assess the effect of sugar on anxiety
  • To assess the effect of caffeine on sleep quality
  • To assess the effect of caffeine on anxiety (correct)

Which of the following is NOT a basic problem illustrated by the simple experiment mentioned in the text?

  • Selection of a statistical analysis appropriate for the type of data
  • Assessing the impact of sample size on data analysis (correct)
  • Evaluating whether a sample is representative of a population
  • Selection of a sample from a population

What is a sample, as defined in the context of research mentioned in the text?

  • The standard deviation of a variable in a population
  • The average value of a variable in a population
  • A subset of members of a population (correct)
  • The entire population being studied

What is the main purpose of selecting a sample from a population?

<p>To make it easier to generalize findings to the entire population (D)</p> Signup and view all the answers

What type of sampling method is mentioned in the text for selecting a sample from the population?

<p>Stratified random sampling (D)</p> Signup and view all the answers

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