Samples come from populations .What is sampling distrubution of the sample mean ? and how is the standard error of the mean related to a sampling distrubition of the sample mean ?
Solution :
Given that,
mean =
standard deviation =
sample size = n
The sampling distribution of mean and standard deviation is ,
= / n =
Samples come from populations .What is sampling distrubution of the sample mean ? and how is...
Test the claim that the samples come from populations with the same mean. Assume that the populations are normally distributed with the same variance. Given the sample data below, test the claim that the populations have the same mean. Use a significance level of 0.05. a. test statistic b. critical value
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