A 90% Confidence Interval for the Mean Percentage of Airline

question 120

Multiple Choice

A 90% confidence interval for the mean percentage of airline reservations being canceled on the day of the flight is (1.5%, 4.2%) . What is the point estimator of the mean percentage of reservations
That are canceled on the day of the flight?

• A)2.85%
• B)1.35%
• C)2.7%
• D)2.10%

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Definitions:

Nitrogen Cycle

The worldwide circulation of nitrogen from the abiotic environment into living things and back into the abiotic environment.

Carbon Cycle

The worldwide circulation of carbon from the abiotic environment into living things and back into the abiotic environment.

Photosynthetic Organisms

Organisms capable of photosynthesis, a process that converts light energy into chemical energy, typically involving the production of oxygen from carbon dioxide.

Carbon Dioxide

Created both by the burning of organic matter and the act of respiration, this gas, which neither has color nor a detectable odor, is essential for plant photosynthesis.