The Daily Dinner Bills in a Local Restaurant Are Normally

question 12

Essay

The daily dinner bills in a local restaurant are normally distributed with a mean of $28 and a standard deviation of $6.
a.What is the probability that a randomly selected bill will be at least $39.10?
b.What percentage of the bills will be less than $16.90?
c.What are the minimum and maximum of the middle 95% of the bills?
d.If twelve of one day's bills had a value of at least $43.06, how many bills did the restaurant collect on that day?

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Definitions:

Correlation

A statistical measure that indicates the extent to which two or more variables fluctuate together.

Humanistic Psychology

A school of thought that investigates how people grow to become happier and more fulfilled; it focuses on the basic goodness of people.

Behaviorism

A branch of psychology that focuses on observable behaviors rather than on internal events like thinking and emotion, emphasizing the effects of environment on behavior.

Gestalt Psychology

A theory of mind and brain positing that the operational principle of the brain is holistic, parallel, and analog, with self-organizing tendencies.