Find and Interpret the Area Under a Normal Curve

question 8

Multiple Choice

Find and Interpret the Area under a Normal Curve
-A new phone system was installed last year to help reduce the expense of personal calls that were being made by employees. Before the new system was installed, the amount being spent on personal calls followed a normal distribution with an average of $800 per month and a standard deviation of $50 per month. Refer to such expenses as PCE s (personal call expenses) . Using the distribution above, what is the probability that a randomly selected month had a PCE of between $675.00 and $890.00

• A) 0.9579
• B) 0.0421
• C) 0.9999
• D) 0.0001

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Definitions:

DNA Sequences

DNA sequences are the specific arrangements of nucleotides (adenine, thymine, cytosine, and guanine) on a strand of DNA that encode the genetic information of an organism.

Gene Flow

Describes the movement, or migration, of alleles from one population to another.

Genetic Drift

Genetic drift is evolution arising from random changes in the genetic composition of a population from one generation to the next.

Phylogenetic Tree

A diagram that depicts the evolutionary relationships among various biological species or entities based upon similarities and differences in their physical and/or genetic characteristics.