The Salaries of the Employees of a Corporation Are Normally

question 129

Essay

The salaries of the employees of a corporation are normally distributed with a mean of $25,000 and a standard deviation of $5,000.
a.What is the probability that a randomly selected employee will have a starting salary of at least $31,000?
b.What percentage of employees has salaries of less than $12,200?
c.What are the minimum and the maximum salaries of the middle 95% of the employees?
d.If sixty-eight of the employees have incomes of at least $35,600, how many individuals are employed in the corporation?

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Definitions:

Brainwaves

Electrical impulses in the brain, measured by EEG, that reflect the brain's activity levels and states of arousal, including delta, theta, alpha, beta, and gamma waves.

REM Sleep

A phase of sleep characterized by rapid eye movements, low muscle tone, and vivid dreams, during which the brain is highly active.

Task-unrelated Thoughts

Thoughts that occur while engaged in a task, which are not directly related to the task at hand, often serving as distractions.

Mind Wandering

A cognitive process where attention shifts away from a primary task to unrelated thoughts or fantasies.