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It is not important that the data is of a simple random sample of size "n" from the population of interest
Standard error of a statistic refers to..
Degrees of freedom, in a t-statistic, is found by
Density curves of the t distributions are similar in shape to the standard normal curve.
P-values are not exact if the population distribution is normal
In a matched pair design
To compare the responses to the two treatments in a matched pair design
If the confidence level of p value does not change very much, the significance test is called
T procedures are useful for