Null and Alternative Hypotheses

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•
Mathematics
•
9th - 12th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
What is a null hypothesis?
Back
The null hypothesis (H0) is a statement that there is no effect or no difference, and it serves as a starting point for statistical testing.
2.
FLASHCARD QUESTION
Front
What is an alternative hypothesis?
Back
The alternative hypothesis (H1 or Ha) is a statement that indicates the presence of an effect or a difference, opposing the null hypothesis.
3.
FLASHCARD QUESTION
Front
What does it mean if a null hypothesis is rejected?
Back
Rejecting the null hypothesis suggests that there is sufficient evidence to support the alternative hypothesis.
4.
FLASHCARD QUESTION
Front
What is the significance level in hypothesis testing?
Back
The significance level (alpha) is the probability of rejecting the null hypothesis when it is actually true, commonly set at 0.05.
Tags
CCSS.HSS.MD.B.5B
5.
FLASHCARD QUESTION
Front
What is a one-tailed test?
Back
A one-tailed test is a hypothesis test that evaluates the direction of the effect, either greater than or less than a certain value.
6.
FLASHCARD QUESTION
Front
What is a two-tailed test?
Back
A two-tailed test is a hypothesis test that evaluates whether a parameter is significantly different from a specified value, without specifying a direction.
7.
FLASHCARD QUESTION
Front
What does 'p-value' represent in hypothesis testing?
Back
The p-value is the probability of obtaining test results at least as extreme as the observed results, assuming the null hypothesis is true.
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