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Mathematics 11 Online
OpenStudy (nuccioreggie):

This question is tricky. help

OpenStudy (nuccioreggie):

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 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.

OpenStudy (anonymous):

its d

OpenStudy (anonymous):

the last question u posted was d

OpenStudy (nuccioreggie):

This is a different one

OpenStudy (nuccioreggie):

Ok

OpenStudy (kropot72):

If you tossed a fair coin 50 times, how many heads would you expect?

OpenStudy (nuccioreggie):

I think it would me C @kropot72

OpenStudy (nuccioreggie):

Whats ur opinion

OpenStudy (kropot72):

So I can help you, please answer my question: "If you tossed a fair coin 50 times, how many heads would you expect?"

OpenStudy (kropot72):

If you tossed a fair coin many times, you would expect to get heads about half of the time. Do you agree?

OpenStudy (nuccioreggie):

Yes i do agree

OpenStudy (kropot72):

Good. Then back to my question: If you tossed a fair coin 50 times, how many heads would you expect?

OpenStudy (nuccioreggie):

Bout 50

OpenStudy (kropot72):

So you think that if you tossed a fair coin 50 times, it would come up heads nearly every time?

OpenStudy (nuccioreggie):

I think

OpenStudy (nuccioreggie):

25

OpenStudy (kropot72):

Yes, you would expect heads about 25 times. In the question group C got heads 31 times in 50 tosses, so the experimental probability is higher than the theoretical probability. However group D got 51 heads in 100 tosses, so the experimental probability is very close to the theoretical probability. Do you understand?

OpenStudy (nuccioreggie):

Yes ok so its C

OpenStudy (nuccioreggie):

Sorry i ment D

OpenStudy (kropot72):

Yes, D is correct.

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