Checking Accounts a Bank Has Determined That the Monthly Balances of the Balances

question 4

Short Answer

Checking Accounts
A bank has determined that the monthly balances of the checking accounts of its customers are normally distributed with an average balance of $1,200 and a standard deviation of $250. ​ ​
-{Checking Accounts Narrative} What proportion of customers have monthly balances more than $1,125?

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Definitions:

Pineal Gland

A small endocrine gland in the brain that produces the hormone melatonin, which regulates sleep patterns.

Prolactin

A hormone produced by the anterior pituitary gland that stimulates milk production in mammals.

Pituitary Gland

A small, pea-sized gland located at the base of the brain, critical in controlling growth, metabolism, and reproductive functions.