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At one point the average price of regular unleaded gasoline was ​$3.72 per gallon. Assume that...

At one point the average price of regular unleaded gasoline was ​$3.72 per gallon. Assume that the standard deviation price per gallon is ​$0.06 per gallon and use​ Chebyshev's inequality to answer the following.

(a) What percentage of gasoline stations had prices within 2 standard deviations of the​ mean?

​(b) What percentage of gasoline stations had prices within 2.5 standard deviations of the​ mean? What are the gasoline prices that are within 2.5 standard deviations of the​ mean?

​(c) What is the minimum percentage of gasoline stations that had prices between ​$3.54 and ​$3.90​?

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