THE NEXT QUESTIONS ARE BASED ON THE FOLLOWING INFORMATION

question 147

Essay

THE NEXT QUESTIONS ARE BASED ON THE FOLLOWING INFORMATION:
You have recently joined a country club.Suppose that the number of times you expect to play golf in a month is represented by a normally distributed random variable with a mean of 10 and a standard deviation of 2.4.
-The number of orders that come into a mail-order sales office each month is normally distributed with a mean of 298 and a standard deviation of 15.4.For a particular sample size,the probability that the sample mean exceeds 300 is 0.2.How big must the sample be?

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Definitions:

Glutamate

A major excitatory neurotransmitter in the brain, involved in memory, learning, and the regulation of the nervous system.

Neurotransmitter

Chemical substances released at the end of a nerve fiber by the arrival of a nerve impulse, which, by diffusing across the synapse or junction, causes the transfer of the impulse to another nerve fiber, a muscle fiber, or some other structure.

Memory Formation

The process by which experiences are encoded, stored, and retrieved in the brain.

Acetylcholine

A neurotransmitter in both the peripheral and central nervous systems that is involved in muscle activation, memory formation, and learning.