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The actual probability of getting the observed test result is called the:
AThe mean value
BThe sample size
CThe p-value
DThe z-score
Answer & Solution
Correct answer: C. The p-value
1. The strength of the evidence is expressed as a single probability.
2. Use the sample data to calculate the actual probability of getting the test result.
3. That probability is called the p-value.
4. A z-score is the standardised test statistic rather than the probability itself.
_Source: OpenStax Introductory Statistics 2e (CC BY 4.0), Ch 9 'Hypothesis Testing with One Sample', sections 9.1-9.6_
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