If the Random Variable of X Is Normally Distributed,____% of All

question 116

Multiple Choice

If the random variable of x is normally distributed,____% of all possible observed values of x will be within three standard deviations of the mean.

• A)68.26
• B)95.44
• C)99.73
• D)100
• E)Cannot be determined without knowing the actual mean and standard deviation.

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Definitions:

Facilitated Diffusion

A process of passive transport, aided by transport proteins, that allows molecules to cross the cellular membrane along the concentration gradient without energy expenditure.

Concentration Gradient

The gradual difference in the concentration of solutes in a solution between two regions, leading to the movement of substances from high to low concentration.

Competitive Molecules

Molecules that compete with each other for binding sites on enzymes or receptors in biological systems.

Sodium-Potassium Pump

A cell membrane protein that uses ATP to move sodium ions out of the cell and potassium ions into the cell, essential for cellular function.