Question
In: Statistics and Probability
True or False A. In hypothesis testing, if you fail to reject the null hypothesis, then...
True or False
A. In hypothesis testing, if you fail to reject the null hypothesis, then you have proven the null hypothesis to be true.
B. If you are more concerned about a type I error than a type II error in a hypothesis test, it would be better to use ∝= .01 than ∝= .10.
C. If you have complete information for a population (from a census), it would be unnecessary and inappropriate to carry out a hypothesis test about it.
D. The central limit theorem states that when n is large, the sampling distribution of xത is well approximated by a normal curve, even when the population distribution is not normal.
Solutions
orchestra answered 1 year agoRelated Solutions
The decision in any hypothesis is to reject the null hypothesis OR to fail to reject...
The decision in any hypothesis is to reject the null hypothesis
OR to fail to reject the null hypothesis.
Under what conditions do you reject the null hypothesis in any
hypothesis test?
Find an example of a hypothesis test of the mean in your
homework this week and use it to explain how a conclusion is
written if the null hypothesis is rejected?
Find an example of a hypothesis test of the mean in your
homework this week and use...
For the following questions, state whether you would reject or fail to reject the null hypothesis:...
For the following questions, state whether you would reject or
fail to reject the null hypothesis:
Critical value z > 1.96 or z < -1.96
Test value: -2.87
Critical value z > 2.33
Test value: 1.85
Critical value z > 2.33
Test value: -2.87
Two tailed z test with an α=0.05
Test value: 1.85
One tailed z test in the positive direction with an α=0.01
Test value: 8.56
For the following questions, state whether you would reject or fail to reject the null hypothesis:...
For the following questions, state
whether you would reject or fail to reject the null hypothesis:
Critical value z > 1.96 or z < -1.96
Test value: -2.87
Critical value z > 2.33
Test value: 1.85
Critical value z > 2.33
Test value: -2.87
Two tailed z test with an α=0.05
Test value: 1.85
One tailed z test in the positive direction with an α=0.01
Test value: 8.56
How do you decide whether to reject or fail to reject the null hypothesis? How do...
How do you decide whether to reject or fail to reject the null
hypothesis?
How do you tell whether the test is left, right, or two
tailed?
Why can we never accept the null hypothesis?
Why does decreasing the probability of making a type one error
increase the probability of making a type two error?
How does a researcher decide the level of significance for a
hypothesis test?
Suppose I’m trying to determine whether to reject or fail to reject the null hypothesis that...
Suppose I’m trying to determine whether to reject or fail to
reject the null hypothesis that the country has less than or equal
to 70% of people that believe the country is going in the wrong
direction. If this is not true then I hypothesize that it could be
larger than 70%. I’ve also taken a survey of size 50 and have found
the sample percentage to be 75%. My alpha value is .05.
1. Write the null and alternative...
What does it mean to reject or fail to reject the null hypothesis and when do...
What does it mean to reject or fail to reject the null
hypothesis and when do I reject or fail to reject the null
hypothesis?
What specifically is used to decide whether to reject or fail to reject the null hypothesis?...
What specifically is used to decide whether to reject or fail
to reject the null hypothesis? [1 sentence]
How do you tell whether the test is left, right, or two tailed?
[3 bullets]
A student calculates a p-value and tells you the answer is
2.33. Explain why this could not be correct. [2 sentences]
Why can we never accept the null hypothesis? [2 sentences]
Why does decreasing the probability of making a type one error
increase the probability of making...
How do we determine if we reject or fail to reject a null hypothesis? What are...
How do we determine if we reject or fail to reject a null
hypothesis?
What are the key pieces needed when writing a conclusion?
How do we determine if we reject or fail to reject a null hypothesis? What are...
How do we determine if we reject or fail to reject a null
hypothesis?
What are the key pieces needed when writing a conclusion?
True or False section. When we reject the null hypothesis, we have proven the alternative hypothesis...
True or False section.
When we reject the null hypothesis, we have proven the
alternative hypothesis to be true.
There are only two possible conclusions in a hypothesis test:
reject or fail to reject the
alternative hypothesis.
A Type I error is made when a true null hypothesis is
rejected.
A Type II error is made when we fail to reject a true null
hypothesis.
The level of significance is the probability of making a Type II
error.
The probability...
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