PLEASEE
If we toss three coins 160 times, how many times can we expect the coins to have exactly one head showing?
15
16
60
45

Question

PLEASEE
If we toss three coins 160 times, how many times can we expect the coins to have exactly one head showing? 
    15 
   16 
   60 
   45

anonymous · Answer

If we toss three coins, what are the possible things that can happen?

anonymous · Answer

im so confused

anonymous · Answer

If we toss a coin one time, what are the possible things that can happen?

anonymous · Answer

50 5o one time heads or one times tails

anonymous · Answer

Yes, either it is heads or it is tails, and the P(T) = P(H) = 1/2
OK so far?

anonymous · Answer

By P(H) I mean the probability that it is heads, or the fraction of a large number of tosses that would be heads.

kropot72 · Answer

The sample space is as follows:
HHH
HHT
HTT
HTH
TTT
TTH
THH
THT

kropot72 · Answer

There are 8 possible outcomes each of which has a 1/8 probability of occurring. Three of the possible outcomes have 1 head showing. So the probability of one head showing is 3/8.
Can you solve it now?

kropot72 · Answer

@mc32141 Are you there?