A normal random variable x has an unknown mean and standard deviation. The probability that x exceeds 4 is 0.975, and the probability that x exceeds 5 is 0.95. Find 
and 
Definitions:
Brain
The organ in the head of an animal or human that controls functions of the body, processes thoughts, and enables consciousness.
Messages
Units of communication intended to convey information from one individual to another.
Split Brain
A condition resulting from surgery that divides the brain's hemispheres by cutting the corpus callosum to treat severe epilepsy.
Hidden Objects
Items or elements in a visual environment that are not immediately obvious, requiring careful observation or search to discover.
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