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Maggie is practicing her penalty kicks for her upcoming soccer game. During the practice, she attempts 10 penalty kicks. If each attempt at the penalty kick is independent of the other attempts and if she scores 85% of the time, historically, what is the probability that she scores at least eight goals? Give your answer as a percentage precise to two decimal places.

 Apr 14, 2020
 #1
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"at least eight" means "eight or more":

 

The probability of getting 

--  exactly 8 is:    10C8 · (0.85)8 · (0.15)2  =  0.73153125

--  exactly 9 is:    10C9 · (0.85)9 · (0.15)1 

--  exactly 10 is:  10C10 · (0.85)10 · (0.15)0  =  

 

Can you find the other two answers?

To get the final answer, you will need to add these three answers together.

 Apr 14, 2020

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