Praxis II General Science

Category - Major Ideas

Statistics are often used to determine whether or not an experiment provides enough accuracy to believe the results beyond a reasonable doubt. What confidence level is typically needed for a science experimental result to be considered valid?
  1. 75%
  2. 80%
  3. 85%
  4. 90%
  5. 95%
Explanation
Answer: E - Typically, a p-value of 0.05, meaning only a 5% chance the result was obtained by chance, is needed. This is a 95% confidence. The confidence level requirement can vary depending on your field, but in general if you receive a 95% confidence level from your statistical analysis, most scientists will agree that your results are significant.
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