The personnel department of Franklin National Life Insurance compiled the accomp

Question

The personnel department of Franklin National Life Insurance compiled the accompanying data regarding the income and education of its employees.

Let A be the event that a randomly chosen employee has a college degree, and let B be the event that the chosen employee's income is more than $60,000.

(a) Find each of the following probabilities. (Round your answers to four decimal places.)

Income
    $60,000 or Below     Income
    Above $60,000     Noncollege Graduate     2050 870 College Graduate 360 720

Explanation / Answer

qa
total employees = 4000
college graduates = 1080

P[A] = 108/400

P[B] = 1590/4000

P[AnB] = 72/400

P[B | A] = P[AnB] / P[A]
= 72/ 108

P[BnAc] = 870/4000

P[B | Ac] = 87/159

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