During an experiment, three coins were tossed once.

Mathematics
Tutor: None Selected Time limit: 1 Day

Apr 12th, 2015

If the coins are somehow distinguished, then the sample space is {HHH, HHT, HTH, THH, HTT, THT, TTH, TTT} consists of 8 outcomes. 

Apr 12th, 2015

part 2: 

based on your answer to part A, how many outcomes consists of 3 heads or 3 tails?


Apr 12th, 2015

2 outcomes consist of 3 heads or 3 tails (HHH and TTT)

Apr 12th, 2015

part 3: 

during a math class, each of 24 students tossed three coins once. based on your answer to part B, how many students would you expect to get a result of 3 heads or 3 tails?

Apr 12th, 2015

show work


Apr 12th, 2015

The probability of getting a result of HHH or TTT is 2/8 = 1/4. Then among 24 students there would be 24/4 = 6 who got this result (it is the most probable result, actually the number of students who get either HHH or TTT may be diffferent).

Apr 12th, 2015

thx so much

Apr 12th, 2015

u r welcome


Apr 12th, 2015

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