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Course: AP??/College Statistics?>?Unit 9
Lesson 7: Sampling distributions for differences in sample means- Sampling distribution of the difference in sample means
- Mean and standard deviation of difference of sample means
- Shape of sampling distributions for differences in sample means
- Sampling distribution of the difference in sample means: Probability example
- Differences of sample means — Probability examples
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Shape of sampling distributions for differences in sample means
Problem
A company has offices in two different countries. Employee salaries at both locations are strongly skewed toward the higher salaries.
365体育网投 month, the company takes separate random samples of employees from each location for a survey. Each time, they look at the difference in the mean salary sampled from each location .
What do we know about the shape of the sampling distribution of , and why?