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Category > Business & Finance Posted 02 Jun 2017 My Price 7.00

The average cost of a gallon of unleaded gasoline in Greater Cincinnati

The average cost of a gallon of unleaded gasoline in Greater Cincinnati was reported to be $2.41 (The Cincinnati Enquirer. February 3, 2006). During periods of rapidly changing prices, the newspaper samples service stations and prepares reports on gasoline prices frequently. Assume the standard deviation is $.15 for the price of a gallon of unleaded regular gasoline, and recommend the appropriate sample size for the newspaper to use if they wish to report a margin of error at 95% confidence.

a. Suppose the desired margin of error is &07.

b. Suppose the desired margin of error is &05.

c. Suppose the desired margin of error is $.03.

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Status NEW Posted 02 Jun 2017 07:06 AM My Price 7.00

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file 1496387726-2221388_1_636319296622176164_Required-sample-size.xlsx preview (206 words )
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