anonymous
  • anonymous
Two groups separately performed an experiment by tossing a coin in the air. Group C performed 50 trials and group D performed 100 trials. Each group recorded the results in the table below: Group Heads Tails C 31 19 D 51 49
Mathematics
  • Stacey Warren - Expert brainly.com
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katieb
  • katieb
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anonymous
  • anonymous
What conclusion can be drawn about the number of trials and the probability of the coin landing on heads or tails? The experimental probability and the theoretical probability for group C is same. The experimental probability and the theoretical probability for group D is same. The experimental probability is closer to the theoretical probability for group C than group D. The experimental probability is closer to the theoretical probability for group D than group C.
anonymous
  • anonymous
@phi
phi
  • phi
experimental probability is what they got (in the table) theoretical probability is "theory" if you have two sides, and are equally likely to get one as the other and you toss the coin 100 times, what is the theoretical number of heads you will get? any idea?

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anonymous
  • anonymous
no im lost
phi
  • phi
if a coin is fair, and you toss it 100 times, do you expect to get 100 heads and no tails?
anonymous
  • anonymous
no
phi
  • phi
the coin has one head side and one tail side, and "in theory" you should see the same number of heads and tails.
phi
  • phi
if you toss the coin 100 times, theory says you should see an equal number of heads and tails. in other words, 1/2 of the 100 will be heads and 1/2 of 100 will be tails
anonymous
  • anonymous
oh ok
anonymous
  • anonymous
so would my answer be one of the first two? cause thats what im thinking.
phi
  • phi
toss the coin 100 times, what is the theoretical number of heads you will get?
anonymous
  • anonymous
50 right?
phi
  • phi
yes. and how many tails?
anonymous
  • anonymous
50 also?
phi
  • phi
yes so 50 50 is the theoretical number of heads and tails for group D if you toss the coin 50 times, how many heads do you expect (in theory) ?
anonymous
  • anonymous
25
phi
  • phi
yes, and 25 tails so here is what we have group C theory 25 25 expt 31 19 groud D theory 50 50 expt 51 49
phi
  • phi
can you make sense of any of the answer choices?
anonymous
  • anonymous
oh i think its D. then the last answer choice @phi
anonymous
  • anonymous
am i right?
phi
  • phi
yes. choice D sounds good
anonymous
  • anonymous
thank you!!! ^_^

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