Understanding Null and Alternative Hypotheses

Flashcard
•
Mathematics
•
12th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
What is a null hypothesis?
Back
A statement that there is no effect or difference in the population being studied.
2.
FLASHCARD QUESTION
Front
What is an alternative hypothesis?
Back
A statement that indicates the presence of an effect or difference in the population being studied.
3.
FLASHCARD QUESTION
Front
What does a p-value represent in hypothesis testing?
Back
The probability of obtaining test results at least as extreme as the observed results, assuming that the null hypothesis is true.
4.
FLASHCARD QUESTION
Front
What is the significance level (alpha) in hypothesis testing?
Back
The threshold for determining whether to reject the null hypothesis, commonly set at 0.05.
5.
FLASHCARD QUESTION
Front
What does it mean to reject the null hypothesis?
Back
It means there is sufficient evidence to support the alternative hypothesis.
6.
FLASHCARD QUESTION
Front
What does it mean to fail to reject the null hypothesis?
Back
It means there is not enough evidence to support the alternative hypothesis.
7.
FLASHCARD QUESTION
Front
What is a Type I error?
Back
Rejecting the null hypothesis when it is actually true.
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