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5.    The probabilities for Elizabeth and Edward to choose Business as their major are 0.8 and 0.3, respectively. 

Find the probability that:

a).    Both choose Business as their major.

P = ( both choose Business as their major ) = (0.8) . ( 0.3) = 0.24 

 

b).     Neither chooses Business as their major.

P = ( Neither chooses Business as their major ) = (0.2) . ( 0.7) = 0.14 

 

c).    Only Elizabeth chooses Business as her major.

 

I can't find that one I don't know how to do it ? Any formulae ? or Do how can I DO ? 

 

Thanks ! 

 
 Nov 28, 2015

Best Answer 

 #2
avatar+118724 
+5

5.    The probabilities for Elizabeth and Edward to choose Business as their major are 0.8 and 0.3, respectively. 

Find the probability that:

a).    Both choose Business as their major.

P = ( both choose Business as their major ) = (0.8) . ( 0.3) = 0.24    yes

 

b).     Neither chooses Business as their major.

P = ( Neither chooses Business as their major ) = (0.2) . ( 0.7) = 0.14    yes

 

c).    Only Elizabeth chooses Business as her major.    

          = ( This means Elizabeth does Business and Edward does NOT do business) = 0.8*0.7 = 0.56

 

So our guest#1  was totally correct!

 Nov 29, 2015
 #1
avatar
+5

Just a guess   (0.8). (0.7)

 

because Edward dosnt choose Business (0.7) and Elizibeth does (0.8)

 Nov 28, 2015
 #2
avatar+118724 
+5
Best Answer

5.    The probabilities for Elizabeth and Edward to choose Business as their major are 0.8 and 0.3, respectively. 

Find the probability that:

a).    Both choose Business as their major.

P = ( both choose Business as their major ) = (0.8) . ( 0.3) = 0.24    yes

 

b).     Neither chooses Business as their major.

P = ( Neither chooses Business as their major ) = (0.2) . ( 0.7) = 0.14    yes

 

c).    Only Elizabeth chooses Business as her major.    

          = ( This means Elizabeth does Business and Edward does NOT do business) = 0.8*0.7 = 0.56

 

So our guest#1  was totally correct!

Melody Nov 29, 2015

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