
STAT250_WEEK3
Quiz
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Other
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University
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Medium
Pelin Erkaya
Used 2+ times
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12 questions
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1.
MULTIPLE CHOICE QUESTION
20 sec • 10 pts
Which one of the following hypothesis cannot be a null hypothesis?
H0 : μ = 100
H0 : σ2 ≥ 25
H0 : s = 10
H0 : p < 8
2.
MULTIPLE CHOICE QUESTION
30 sec • 10 pts
Suppose that someone collects data from 15 articles. Assume that data follow a normal distribution, and the population variance is unknown. Then the test statistic is
Z-test
t-test
Z-test or t-test
We cannot use any test
F-test
3.
MULTIPLE CHOICE QUESTION
30 sec • 10 pts
If you reject the null hypothesis when it is false, then you have committed:
a type II error
a type I error
no error
type I and type II error
4.
MULTIPLE CHOICE QUESTION
30 sec • 10 pts
The larger the p-value, the more likely you are to reject the null hypothesis.
TRUE
FALSE
5.
MULTIPLE CHOICE QUESTION
30 sec • 10 pts
Type I error is also called
alpha
beta
p-value
1-beta
critical value error
6.
MULTIPLE CHOICE QUESTION
30 sec • 10 pts
A type II error is committed when:
you reject a null hypothesis that is true
you don’t reject a null hypothesis that is true
you reject a null hypothesis that is false
you don’t reject a null hypothesis that is false
7.
MULTIPLE CHOICE QUESTION
20 sec • 10 pts
If p-value > alpha , we reject the null hypothesis.
TRUE
FALSE
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