SOLUTION: 1. if five coins are flipped, what is the probability that all five coins land on tails? 2.a field goal kicker makes 3 of every 7 attempts at a field goal. if he kicks 3 field

Question 1039360: 1. if five coins are flipped, what is the probability that all five coins land on tails?
2.a field goal kicker makes 3 of every 7 attempts at a field goal. if he kicks 3 field goals in a certain game, what is the probability that he'll make all three?
Answer by Edwin McCravy(20064) (Show Source): You can put this solution on YOUR website!
1. if five coins are flipped, what is the probability that
all five coins land on tails?


Suppose the five coins are pennies with dates 2012, 2013, 
2014, 2015, and 2016.

1/2 of the time the 2012 penny will land on tails.

1/2 of those times, or 1/4 of the time, the 2013 penny will 
also land on tails.

1/2 of those times, or 1/8 of the time, the 2014 penny will 
also land on tails.

1/2 of those times, or 1/16 of the time, the 2015 penny will 
also land on tails.

1/2 of those times, or 1/32 of the time, the 2016 penny will 
also land on tails.

Answer: 1/32 of the time, or a probability of 1/32.
That's about 3% of the time.

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2.a field goal kicker makes 3 of every 7 attempts at a
field goal. if he kicks 3 field goals in a certain game,
what is the probability that he'll make all three?

3/7 of the time he'll make the first field goal 3/7 of those times, or 9/49 of the time, he'll also make the second field goal. 3/7 of those times, or 27/343 of the time, he'll also make the third field goal. Answer: 27/343 of the time, or a probability of 27/343. That's about 8% of the time. Edwin

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