Question 887612
percents are:

<pre>

	     1 year     2 years     3 years

Male           0.67        0.45        0.20
Female         0.73        0.64        0.39

</pre>


there are 200 males and there are 300 females.


.67 * 200 = 134 males who stayed at least one year.
.73 * 300 = 219 females who stayed at least one year.


total is 353 out of 500 employees who stayed as least 1 year.


353 / 500 = .706


the probability that an employee stayed at least one year is therefore equal to .706.