Hypothesis testing
Flashcard
•
Mathematics
•
11th - 12th Grade
•
Practice Problem
•
Hard
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1.
FLASHCARD QUESTION
Front
Define a Type I error.
Back
Rejecting a true null hypothesis.
2.
FLASHCARD QUESTION
Front
What is the null and alternate hypothesis if the average weight of a 6th grade student's backpack is 18.4 lbs and the principal thinks it does not weigh 18.4 lbs?
Back
H₀ = 18.4, Hₐ ≠ 18.4.
3.
FLASHCARD QUESTION
Front
What are the null and alternative hypotheses for a part that is supposed to weigh 19 pounds?
Back
H₀ : μ = 19, Hₐ : μ ≠ 19.
4.
FLASHCARD QUESTION
Front
When do you use a t-value instead of a z-value?
Back
When n < 30.
5.
FLASHCARD QUESTION
Front
What is a null hypothesis?
Back
A statement that there is no effect or no difference, and it is the hypothesis that researchers aim to test.
6.
FLASHCARD QUESTION
Front
What is an alternative hypothesis?
Back
A statement that indicates the presence of an effect or a difference, opposing the null hypothesis.
7.
FLASHCARD QUESTION
Front
What does it mean to reject the null hypothesis?
Back
It means that there is sufficient evidence to support the alternative hypothesis.
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