Question 229303
Make a table showing all possible outcomes of tossing four coins at once. Then, make a table showing the probability distribution for the events 4 heads, 3 heads, 2 heads, 1 heads, and 0 heads.
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You should really do this for yourself so you can see what a sample
space looks like.  Your table should contain 16 items, starting with
hhhh and ending with tttt.


 Then, answer the following questions: 
a. What is the probability of getting two heads and two tails when you toss four coins at once?
hhtt/thht/tthh/htth/thth/htht
Prob = 6/16 = 3/8
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b. What is the probability of tossing anything except four heads when you toss four coins at once?
Prob = 15/16
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c. Which event (a or b above) is most likely to occur?
Ans: b
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Cheers,
Stan H.