Q8 A car insurance agent was concerned about losing customers to an online compe
ID: 3394437 • Letter: Q
Question
Q8 A car insurance agent was concerned about losing customers to an online competitor. To investigate, he randomly selected profiles (type of car, coverage, driving record, etc.) for 7 of his clients and checked online price quotes for their policies. The comparisons are shown to the right. His statistical software produced the displayed summaries (where PriceDiffequals=Localminus? Online).At first, the insurance agent wondered whether there was some kind of mistake in this output. He thought the Pythagorean Theorem of Statistics should work for finding the standard deviation of the
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Explanation / Answer
This is paired data.
Hence D is the answer
The sum of variances follows only for independent variables.
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