anonymous
  • anonymous
help!:)
Mathematics
chestercat
  • chestercat
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anonymous
  • anonymous
1 Attachment
mathstudent55
  • mathstudent55
When you toss a coin, there are two possible outcomes, heads or tails. Each outcome is as likely as the other. When you toss a coin, what is the theoretical probability of landing heads?
anonymous
  • anonymous
1/2?

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mathstudent55
  • mathstudent55
Correct. 1/2 is also 50 %
mathstudent55
  • mathstudent55
Now look at the two experiments.
mathstudent55
  • mathstudent55
For group G and group H, the theoretical probability of landing on heads is 50%. Now let's look at experimental probabilities. In group G there were 50 tosses. There were 34 heads. What percentage is 34 out of 50?
anonymous
  • anonymous
mathstudent55
  • mathstudent55
No. To find what percentage 34 is of 50, divide 34 by 50 and multiply by 100. 34/50 * 100
anonymous
  • anonymous
68
mathstudent55
  • mathstudent55
Good. The experimental probability of getting heads in group G was 68%. Now we need to see what the experimental probability of getting heads in groups H was. In group H, there were 100 tosses. 51 of those tosses resulted in heads. Heads was 51 out 100. What percent is that?
anonymous
  • anonymous
51
mathstudent55
  • mathstudent55
Good. Now we have this: Experimental Theoretical Experimental Theoretical Heads Heads Tails Tails Group G 68 50 32 50 Group H 51 50 49 50
mathstudent55
  • mathstudent55
Now look in the table above, read all choices, and choose the correct choice.
anonymous
  • anonymous
group g
anonymous
  • anonymous
mathstudent55
  • mathstudent55
A. The experimental probability and theoretical probability for group G is the same. Heads 68 Heads 50 Tails 32 Tails 50 For group G, the experimental and theoretical probabilities are very different. A is not the correct answer.
mathstudent55
  • mathstudent55
B. The experimental probability and theoretical probability for group H is the same. Heads 51 Heads 50 Tails 49 Tails 50 For group H, the experimental and theoretical probabilities are a little different. B is not the correct answer.
mathstudent55
  • mathstudent55
Group G: Experimental Probability 68 Theoretical Probability 50 Group H: Experimental Probability 51 Theoretical probability 50 Which group has the experimental probability closer to the theoretical probability, G or H? Choose the correct answer from choices C and D,
anonymous
  • anonymous
c?
mathstudent55
  • mathstudent55
C states the experimental probability is closer for group G than for group H. What is closer Group G 34 to 50, or Group H 51 to 50?

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