Find the Expected Value of a Random Variable X Having

question 32

Multiple Choice

Find the expected value of a random variable X having the following probability distribution:

• A) E(
• X) = 2.3125
• B) E(
• X) = 1.0975
• C) E(
• X) = 2.1875
• D) E(
• X) = 2.3825

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Definitions:

Pretest-posttest Design

A research methodology that measures participants before and after an intervention, allowing for comparisons.

Participant Mortality

In research, the loss of participants from a study before it is completed due to withdrawal, loss to follow-up, or death.

Attrition

The loss of subjects who decide to leave an experiment. See mortality.

Exercise Program

A structured regimen or plan of physical activities designed to improve fitness or achieve a specific health outcome.