Mathematics, 25.04.2020 01:32 GrainLeaf
A particular automobile costs an average of $21,755 in the Pacific Northwest. The standard deviation of prices is $650. Suppose a random sample of 30 dealerships in Washington and Oregon is taken, and their managers are asked what they charge for this automobile. What is the probability of getting a sample average cost of less than $21,500? Assume that only 120 dealerships in the entire Pacific Northwest sell this automobile.
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A particular automobile costs an average of $21,755 in the Pacific Northwest. The standard deviation...
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