The U.S. Energy Information Administration (US EIA) reported that the average price for a gallon of regular gasoline is $3.94 (U

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4 years ago

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The U.S. Energy Information Administration (US EIA) reported that the average price for a gallon of regular gasoline is $3.94 (U

S EIA website, April 6, 2012). The US EIA updates its estimates of average gas prices on a weekly basis. Assume the standard deviation is $0.25 for the price of a gallon of regular gasoline and recommend the appropriate sample size for the US EIA to use if they wish to report a desired margin of error of $0.05 at 95% confidence.
a. The desired margin of error is $.10.
b. The desired margin of error is $.07.
c. The desired margin of error is $.05.

Mathematics

1 answer:

ElenaW [278] · Answer 1 · 2022-02-25T12:02:00+03:00

ElenaW [278]4 years ago

4 0

I’m going to guess it maybe c idk lol