Let X Be a Random Variable with the Following Distribution

question 63

Short Answer

Let x be a random variable with the following distribution:
Round your answer to three decimal places, if necessary.
a. Find the expected value of x.
______________
b. Find the standard deviation of x.
______________
c. What is the probability that x is further than one standard deviation from the mean?
______________

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Definitions:

Genu Valgum

A condition commonly known as "knock-knees," where the knees angle in and touch each other when the legs are straightened.

Lumbar Spine

The lower part of the spine that is composed of five vertebral bones, known for bearing the majority of the body's weight and for its flexibility.

Kyphosis

Exaggeration of the posterior curvature of the thoracic spine.

Thoracic Spine

The portion of the spine located in the upper and middle back, consisting of twelve vertebrae.