A Coin Is Tossed 20 Times

question 36

Multiple Choice

A coin is tossed 20 times. A person who claims to have extrasensory perception is asked to predict the outcome of each flip in advance. She predicts correctly on 14 tosses. What is the probability of being correct 14 or more times by guessing? Does this probability seem to
Verify her claim? Use the normal distribution to approximate the desired probability.

• A) 0.4418, no
• B) 0.4418, yes
• C) 0.0582, no
• D) 0.0582, yes

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Definitions:

Energy Demand

The total amount of energy required by all consumers and businesses in a particular area or system.

Fuel Supplies

The available stockpiles or sources of fuels such as coal, gas, oil, and renewable energy sources used for consumption.

Recycling

The process of collecting, processing, and converting waste materials into new products to prevent the waste of potentially useful resources and reduce environmental impact.

Municipal Solid Wastes

Various types of waste materials generated from residential, institutional, and commercial sources, including paper, food scraps, and plastics.