X Is a Normally Distributed Random Variable with a Mean

question 6

Multiple Choice

X is a normally distributed random variable with a mean of 5.0. Find the standard deviation of the distribution if 59.10% of the data lies to the right of 4.54. (Note: the diagram is not necessarily to scale.)

• A) 2.0
• B) 1.3
• C) 1.0
• D) 0.5

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Definitions:

Polar Solvent

A solvent with a dielectric constant greater than 15, which can dissolve ionic or polar solutes due to its polarity.

Ethylene Glycol

A toxic, colorless liquid with the formula C2H6O2, used primarily as an antifreeze in cooling and heating systems.

Polar Molecules

Molecules with a distribution of charge leading to one part being slightly positive and another part being slightly negative.

Aqueous Solution

A solution in which water is the solvent.