You Want to Estimate the Average Gas Price in Canada

question 43

Multiple Choice

You want to estimate the average gas price in Canada for a litre of regular unleaded gasoline.You take a random sample of prices from 100 gas stations,recording an average cost of $1.37 and a standard deviation of $0.11.Create a 99% confidence interval for the mean price per litre of regular unleaded gasoline.

• A)($1.36,$1.38)
• B)($1.30,$1.44)
• C)($1.36,$1.38) .
• D)($1.22,$1.52)
• E)($1.34,$1.40)

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Definitions:

Nitrification

A microbial process in the nitrogen cycle where ammonia is converted into nitrite and then into nitrate.

Atmosphere

The layer of gases surrounding a planet, essential for life on Earth, providing air to breathe and protecting from harmful solar radiation.

Assimilation

The process by which individuals or groups of differing ethnic heritage are absorbed into the dominant culture of a society.

Chlorophyll

A pigment found in plants and algae that absorbs sunlight for photosynthesis, giving them their green color.