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A batter has a 37% probability of getting a hit each time at bat, independent of his previous at bat. What is his percent probability of getting at least two hits four times at bat?

 Dec 21, 2018
 #1
avatar+98130 
+1

The probabilty is given by :

 

Prob 2 hits  + Prob 3 hits + Prob 4 hits

 

C (4,2) (.37)^2 (1 -.37)^2  + C(4,3) (.37)^3 (1 -.37) + (.37)^4 ≈ .4724  = 47.24%

 

 

 cool cool cool

 Dec 21, 2018
 #2
avatar+107 
+1

Thank you

MacTyBoys  Dec 21, 2018
 #3
avatar+98130 
0

OK.....!!!

 

cool cool cool

CPhill  Dec 21, 2018

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