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In: Statistics and Probability

Sales volume last weekend for four samples, each consisting of five car dealerships, were as follows:...

Sales volume last weekend for four samples, each consisting of five car dealerships, were as follows:

Data Point 1 2 3 4 5
Sample 1 10 31 42 18 29
Sample 2 35 41 27 15 33
Sample 3 32 17 38 25 31
Sample 4 17 20 36 28 44

What is the variance of the distribution of sample means?

Please round your answer to the nearest tenth.

Note that the correct answer will be evaluated based on the full-precision result you would obtain using Excel.

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