All Questions
5 questions
0
votes
0
answers
64
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Understanding the relationship between a 'sampling distribution of a statistic' and a 'population distribution' in the context of a 'hypothesis test'
I would like to confirm that I am understanding the relationship between a sampling distribution of a statistic (an example of a 'statistic' would be a sample mean $\bar{x}$) and a population ...
- 71
3
votes
2
answers
278
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How to describe in words the logical conclusion of a one-tail t-test?
Lets say we have the following null and alternative hypothesis:
$$H_0: \mu = \mu_0, \; H_A:\mu > \mu_0 $$
Thus, the p-value in this situation represents the probability of obtaining test results ...
- 719
4
votes
5
answers
2k
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Why is the concept of the Null hypothesis associated with the student's t distribution?
There are dozens of continuous probability distributions like Gaussian (normal), Variance-gamma, Holtsmark, etc. Yet, the concept of the Null hypothesis is basically associated with Student's t-...
- 107
0
votes
1
answer
2k
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R: Simulation distribution: p-value and t-test
The theory suggests that P-values should follow a Uniform distribution if the null hypothesis is true.
I am testing H0: mean control= mean treatment. With 2 differents simulation methods: 1)p value ...
- 13
0
votes
1
answer
55
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help interpreting t-test and p-value - or help me finding a good statistical test
I have two samples
background
and
input
these are the histograms:
sample sizes are well above the 1000s, so the sample variance of the mean is pretty much low.
I'm trying to have a statistic ...
