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A researcher studied the relationship between the salary of a working woman with school-aged children and...

A researcher studied the relationship between the salary of a working woman with school-aged children and the number of children she had. The results are shown in the following probability table:

  Number of Children

Salary 2 or fewer children more than 2 children
high salary 0.13 0.02
medium salary 0.20 0.10
low salary 0.30 0.25

Let A denote the event that a working woman has 2 or fewer children, and let B denote the event that a working woman has a low salary.

What is the probability that a working woman has 2 or fewer children? a. 0.30 b. 0.55 c. 0.2 d. 0.63

What is the probability that a working woman has 2 or fewer children or has a low salary? a. 0.63 b. 0.55 c. 0.72 d. 0.88

Math   Statistics-And-Probability   
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TOPIC:Finding thee required probabilities from the given table.

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