+0  
 
+1
31
2
avatar+139 

I need all three please

 
LaughingFace  Apr 16, 2018
Sort: 

2+0 Answers

 #1
avatar+85726 
+2

First one

 

P (L or D)  = P(L)  + P(D)  - P(L and D)  =

                    (18/50)  + (20/50)  - (6/50)  =

                      [ 18 + 20 - 6 ] / 50  =

                         32/50  =   16/25   =    64%

 

Second one

 

P ( A or B )  = P (A)  + P (B)  - P (A and B)  =

                        .40    +  .25    - .16  =

                                 .49

 

Last one

 

P (S  or R)  = P(S)  + P(R)  - P(S and R )

 

65/200   =   P(S)  +  5/200 - 30/200

 

65/100 = P(S)  - 25/200         add 65/200 to both sides

 

90 /200  = P (S)     =  9/20

 

 

cool cool cool

 
CPhill  Apr 16, 2018
 #2
avatar+139 
+2

Thank you so extremely much! 

 
LaughingFace  Apr 16, 2018

30 Online Users

avatar
avatar
avatar
We use cookies to personalise content and ads, to provide social media features and to analyse our traffic. We also share information about your use of our site with our social media, advertising and analytics partners.  See details