A Testing Bureau Reports That the Mean for the Population

question 41

Multiple Choice

A testing bureau reports that the mean for the population of Graduate Record Exam (GRE) scores is 500 with a standard deviation of 90. The scores are normally distributed. The proportion of scores between 300 and 400 is _________.

• A) 0.3665
• B) 0.4868
• C) 0.8533
• D) 0.1203

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Definitions:

Canada

is a country located in the northern part of North America, known for its vast landscapes, multicultural cities, and bilingual (English and French) cultural heritage.

Liquefied Natural Gas

Natural gas that has been cooled down to liquid form for ease and safety of non-pressurized storage or transport.

Methane

A potent greenhouse gas with a molecular structure of one carbon atom and four hydrogen atoms, contributing significantly to global warming.

Ethane

a colorless, odorless hydrocarbon gas that is a constituent of natural gas and used as a petrochemical feedstock.