Question 1192353
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52% of all statistics classes require a statistical calculator and 
30% require the use of a computer that has statistical software. 
Of the classes that require a statistical calculator, 16% also require the use of a computer.


(a) P(Requires a Statistical Calculator) =


(b) P(Requires a Statistical Software)   =

   
(c) P(Requires a Statistical Calculator and Statistical Software)  =

   
(d) P(Requires a Statistical Calculator GIVEN It Requires Statistical Software)  =
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        In the post by  @PChill,  the solution and the answers for  (c)  and  (d)  are  INCORRECT.

        I came to bring correct solutions.



<pre>
(a)  P(Requires a Statistical Calculator) = 0.52  (given).


(b)  P(Requires a Statistical Software)   = 0.30  (given).


(c)  P(Requires a Statistical Calculator and Statistical Software)  = 0.52*0.16 = 0.0832.


(d)  P(Requires a Statistical Calculator GIVEN It Requires Statistical Software)  = {{{0.0832/0.3}}} = 0.277333333.
</pre>

Solved (correctly).