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5. A box contains 4 black shirts, 8 blue shirts, 4 black pants, and 10 blue pants. Determine the probability of randomly selecting a blue piece of clothing or a pair of pants. Use P(A or B) = P(A) + P(B) - P(A and B) to explain your answer

 May 3, 2019
 #1
avatar+100519 
+1

(a)   If independent....then

P(winning and playing at home)  = P(winning) *P(playing at home)....so....

0.2  =  0.25 * 0.8   ???

0.2  = 0.2   ....so.....independent

 

(b) P(losing and playing away) = P(losing) * P(playing away)???

0.1  =  0.7 * 0.15  ???

0.1  =  0.105.....so....not independent

 

 

Second one

 

P(blue or pants)  = P(blue)+ P(pants)  - P(blue and pants)  =

 

                                18/26   +   14/26  -  10/26  =

 

                                    32/26  - 10/26  =

    

                                        22/26   =     

 

 

                                        11/13

 

 

cool cool cool

 May 3, 2019

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