Why Is Probability Theory Needed Rather Than Assuming That a Finding

question 4

Multiple Choice

Why is probability theory needed rather than assuming that a finding is different from that of the population?

• A) Due to sampling variation a sample will always be at least slightly different from the population
• B) To be 100% sure that our findings are correct
• C) To say that our independent variable unquestionably causes the dependent variable
• D) Confidence intervals are not enough to be certain of our findings

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