Apply the 68-95-99.7 Rule to Answer the Question

question 14

Multiple Choice

Apply the 68-95-99.7 rule to answer the question.
-The annual precipitation for one city is normally distributed with a mean of 35.4 inches and a standard deviation of 3.9 inches. What percentage of years had precipitation between 23.7 inches and 47.1 inches?

• A)99.7%
• B)34%
• C)95%
• D)68%

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Definitions:

Enantiomers

Molecules that are mirror images of each other but cannot be superimposed, similar to right and left hands, often displaying different properties in biological systems.

Diastereomer

Isomers in stereochemistry that don't act as mirror counterparts and exhibit unique physical and chemical traits.

Specific Rotation

A property of chiral substances that measures the direction and degree to which they rotate plane-polarized light.

Enantiomeric Excess

A measurement of the purity of an enantiomer in a mixture, defined as the difference in percentage between the two enantiomers.