Null Hypothesis (H0) Answer: The claim that we weigh evidence against in a statistical test; usually a statement of "no difference"
Alternative Hypothesis (Ha) Answer: The claim about the population that we try to weigh evidence for.
One-sided alternative hypothesis Answer: ...
AP Stats: Unit 9 Test Review
Comprehensive Q&A Exam 2024/2025
Null Hypothesis (H0) Answer: The claim that we weigh evidence against in a statistical test; usually a
statement of "no difference"
Alternative Hypothesis (Ha) Answer: The claim about the population that we try to weigh evidence
for.
One-sided alternative hypothesis Answer: If it states that a parameter is larger than the null
hypothesis value or if it states that the parameter is smaller than the null value.
Two-sided alternative hypothesis Answer: If it states that the parameter is different from the null
value.
P-value Answer: Probability, computed assuming Ho is true, that the statistic would take a value as
extreme as or more extreme than the one actually observed.
Statistically significant at level a Answer: If the p-value is smaller than alpha (a), we say that the
results of a study are statistically significant at level a.
statistically significant Answer: not likely to happen just by chance alone
Type 1 error Answer: we reject H0 when H0 is true
Type 2 error Answer: we fail to reject H0 when H0 is true
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