Question 1179356
.
It is estimated that 25% of all California adults are college graduates and that 31% of California adults 
are regular internet users. It is also estimated that 21% of California adults are both college graduates 
and regular internet users

a) Among California adults, what is the probability that a randomly chosen internet user is a college graduate? 
Round your answer to 2 decimal places.

(b) What is the probability that a California adult is an internet user, given that he or she is a college graduate? 
Round your answer to 2 decimal places.
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<pre>
(a)  P(a randomly chosen internet user is a college graduate) =


        //  use the definition of the <U>conditional probability</U> 


        = {{{P(both)/P(internet_user)}}} = {{{0.21/0.31}}} = 0.68   (rounded).    <U>ANSWER</U>



(b)  P(a California adult is an internet user, given that he or she is a college graduate) = 


         //  use the definition of the <U>conditional probability</U> 


        = {{{P(both)/P(college_graduate)}}} = {{{0.21/0.25}}} = 0.84   (rounded).    <U>ANSWER</U>
</pre>

Solved.


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This problem is to develop your skills solving the &nbsp;<U>conditional probability</U> &nbsp;problems.


To develop these skills farther and to get feeling of the solid ground under your legs, read the lessons

&nbsp;&nbsp;&nbsp;&nbsp;- <A HREF=https://www.algebra.com/algebra/homework/Probability-and-statistics/Conditional-probability-problems.lesson>Conditional probability problems</A> 

&nbsp;&nbsp;&nbsp;&nbsp;- <A HREF=https://www.algebra.com/algebra/homework/Probability-and-statistics/More-conditional-probability-problems.lesson>Conditional probability problems REVISITED</A> 

in this site.



Also, &nbsp;you have this free of charge online textbook in ALGEBRA-II in this site

&nbsp;&nbsp;&nbsp;&nbsp;- <A HREF=https://www.algebra.com/algebra/homework/complex/ALGEBRA-II-YOUR-ONLINE-TEXTBOOK.lesson>ALGEBRA-II - YOUR ONLINE TEXTBOOK</A>.


The referred lessons are the part of this online textbook under the topic &nbsp;"<U>Solved problems on Probability</U>" 
and &nbsp;"<U>Additional problems on Probability</U>". 



Save the link to this textbook together with its description


Free of charge online textbook in ALGEBRA-II
https://www.algebra.com/algebra/homework/complex/ALGEBRA-II-YOUR-ONLINE-TEXTBOOK.lesson


into your archive and use when it is needed.