If we fail to reject the null hypothesis, ____________.

We have failed to find evidence to support the alternative

Type I error occurs when the null ______________.

is actually true, but the test incorrectly rejects

If a test fails to reject the null hypothesis then _________________.

the test has failed to provide significant evidence for Ha

The power of the test represents probability of ______________.

correctly rejecting the null, when it is indeed false

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Duplicate of Hypothesis Testing

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Hypothesis testing, type error, power,

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Questions 11

Answers

1
Hypothesis testing is a technique used to draw statistically valid conclusions about
Population Parameters
Individuals
Random Errors
Sample Statistics
2
The statement of "no change from the traditional value," "no effect," "no relationship."
P-Value
significance level
alternative hypothesis
null hypothesis
3
If we fail to reject the null hypothesis, ____________.
We have found evidence to support the alternative
The null hypothesis is proved to be true
We have failed to find evidence to support the alternative
all of the above
4
The probability of making Type I error is denoted ______.
α
σ
β
1-β
5
Type I error occurs when the null ______________.
is actually true, and the test correctly fails to reject
Is actually false, but the test incorrectly fails to reject
is actually true, but the test incorrectly rejects
All of the above
6
If a test fails to reject the null hypothesis then _________________.
the p-value of the test must be smaller than α
there is significant evidence against the null hypothesis
the test statistic is statistically significant
the test has failed to provide significant evidence for Ha
7
Hypothesis testing can result in ______ different outcomes
2
4
3
1
8
If we reject the null hypothesis then _____________.
the p-value must be smaller than the alpha level
we have found significant evidence against the null
all of the above
we have found significant evidence for the alternative
9
Which of the following will increase the power of a test?
decreasing the significance level
Increasing alpha
decreasing the sample size
decreasing the effect size
10
Hypothesis Testing always assumes that the ______________.
Alternative hypothesis is true
Null hypothesis is true
Probability of the null being true is less than 50%
Probability of the alternative being true is less than 50%
11
The power of the test represents probability of ______________.
correctly rejecting the null, when it is indeed false
incorrectly failing to reject the null, when it is false
incorrectly rejecting the null, when it is actually true
correctly failing to reject the null, when it is true

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