Suppose That Scores on a Test Are Normally Distributed with a Mean

question 73

Essay

Suppose that scores on a test are normally distributed with a mean of 80 and a standard deviation of 8. Read the two questions below. A. What is the 90th percentile? B. What percentage of students score less than 90? Explain the difference between the two questions. Describe how the method for solving A would differ from the the method for solving B. Be sure to include in your explanation a description of how the table of areas would be used in each case.

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Definitions:

Opiate

Substances derived from opium, used for their analgesic properties, but also known for their potential to cause dependence.

Anandamide

A neurotransmitter and endocannabinoid that plays a role in pain, mood, appetite, and memory processes.

2-AG

An endocannabinoid, a type of naturally occurring compound in the brain, involved in various physiological processes including appetite, pain-sensation, and mood.

Synaptic Receptors

Protein molecules on the surface of neurons where neurotransmitters bind to transmit signals across synapses.