A Couple Who Does Not Have Cystic Fibrosis but Are

question 44

Multiple Choice

A couple who does not have cystic fibrosis but are both heterozygous has already had three girls with cystic fibrosis, and are hoping to have a healthy child for their fourth. What are the chances that the fourth child will be a healthy male?

• A) 0
• B) 1/8
• C) 1/4
• D) 3/8
• E) 1/2

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Definitions:

Return On Investment

A measurement of the profitability of an investment, calculated by dividing net profit by the initial capital cost.

Average Operating Assets

The average value of those assets used for the normal operation of a company over a specific period, often used in return on investment calculations.

Net Operating Income

The total profit of a company after operating expenses are subtracted from gross income.

Residual Income

The income that remains after subtracting all required costs of capital from operating income.