A Major Department Store Has Determined That Its Customers Charge

question 28

Short Answer

A major department store has determined that its customers charge an average of $500 per month, with a standard deviation of $80. Assume the amounts of charges are normally distributed.
a.What percentage of customers charges more than $380 per month?
b.What percentage of customers charges less than $340 per month?
c.What percentage of customers charges between $644 and $700 per month?

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Definitions:

Outgroup Homogeneity Effect

The tendency to view members of an outgroup as more similar to each other than members of one's ingroup.

Visual Perception

The process of interpreting and making sense of visual information from the environment through the eyes and brain.

Shooter Bias

A cognitive bias in which a person is more likely to shoot a target they perceive to be holding a weapon because of their race or ethnicity.

Racial Bias Effect

The influence of an individual's race on the perceptions, attitudes, and actions of others, often leading to prejudice and discrimination.