If we fail to reject the null hypothesis, ____________.

We have failed to find evidence to support the alternative

Ho: p=63% acceptance rate to law school, Ha: better with test prep, sample: 13 of 240 accepted

p-value=.057, fail to reject Ho

Type I error occurs when the null ______________.

is actually true, but the test incorrectly rejects

The power of the test represents probability of ______________.

correctly rejecting the null, when it is indeed false

The alternative hypothesis______________.

Is based on new information provided by sample data

After an ad campaign a HT gave a pvalue of 0.22 when testing for a change of opinion. Meaning?

There's a 22% chance of getting these results if Ho is true.

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

the test has failed to provide significant evidence for Ha

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1-Sample Hypothesis Testing

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Hypothesis testing, type error, power,

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Questions 15

Answers

1
Which of the following will increase the power of a test?
decreasing the significance level
decreasing the effect size
decreasing the sample size
Increasing alpha
2
If we fail to reject the null hypothesis, ____________.
We have failed to find evidence to support the alternative
The null hypothesis is proved to be true
We have found evidence to support the alternative
all of the above
3
Hypothesis testing is a technique used to draw statistically valid conclusions about
Sample Statistics
Population Parameters
Random Errors
Individuals
4
Ho: p=63% acceptance rate to law school, Ha: better with test prep, sample: 13 of 240 accepted
p-value=.057, fail to reject Ho
p-value=.057, reject Ho
p-value=.679, fail to reject Ho
p-value =.679, reject Ho
5
The statement of "no change from the traditional value," "no effect," "no relationship."
null hypothesis
alternative hypothesis
significance level
P-Value
6
Type I error occurs when the null ______________.
Is actually false, but the test incorrectly fails to reject
is actually true, and the test correctly fails to reject
All of the above
is actually true, but the test incorrectly rejects
7
The power of the test represents probability of ______________.
correctly failing to reject the null, when it is true
incorrectly rejecting the null, when it is actually true
incorrectly failing to reject the null, when it is false
correctly rejecting the null, when it is indeed false
8
Hypothesis Testing always assumes that the ______________.
Probability of the null being true is less than 50%
Probability of the alternative being true is less than 50%
Alternative hypothesis is true
Null hypothesis is true
9
If we reject the null hypothesis then _____________.
we have found significant evidence against the null
we have found significant evidence for the alternative
the p-value must be smaller than the alpha level
all of the above
10
The alternative hypothesis______________.
Is based on new information provided by sample data
Is based on new information from the population data
is accepted as correct in the absence of contradictory data
Is not deemed to be an important part of inferential stats
11
The probability of making Type I error is denoted ______.
α
β
1-β
σ
12
Hypothesis testing can result in ______ different outcomes
4
2
1
3
13
HypothesisTesting involves drawing inferences about 2 contrasting _____ relating to a parameter
Data Sets
Theorems
Propositions
Assumptions
14
After an ad campaign a HT gave a pvalue of 0.22 when testing for a change of opinion. Meaning?
There's a 22%% chance their poll is correct.
There's a 22% chance that the ads worked.
There's a 22% chance of getting these results if Ho is true.
There's a 78% chance the ads worked.
15
If a test fails to reject the null hypothesis then _________________.
the test statistic is statistically significant
there is significant evidence against the null hypothesis
the p-value of the test must be smaller than α
the test has failed to provide significant evidence for Ha

1-Sample Hypothesis Testing Flashcards | StudBud