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Help 12,13

NotSoSmart  Apr 16, 2018
 #1
avatar+87639 
+1

12. 

 

P ( Working Radio  l Ready for Service )  = 

 

P ( Working Radio and Ready for Service)

__________________________________

           P(Ready for Service )

 

 

                                                                 =     .67

                                                                        ___

                                                                        .84

 

                                                                  =     67

                                                                        ___          

                                                                         84

 

                                                                  =   .7976  

 

                                                                    =  79.8 %  

 

 

13.   Here's my best attempt at this

 

We have  11  students who are honor students....so  40 - 11 =  29 aren't

We have 10 students who are athletes....but 3 of these are also  honor students

So....7  are athletes  but not honor students

 

So...the probability of  being an athlete given that the student is not an honor student  is

 

7/29   =  .241

 

 

cool cool cool

CPhill  Apr 16, 2018

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