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im stuck on 3-5, and help appreciated.

1. Flip a coin 5 times and record the outcomes here.
H=2/5 T=3/5
2. Start again. Flip the coin 25 times and keep track of the outcomes. Record them here.
H=11/25 T=14/25

Draw a histogram from the data in question 1, and a separate histogram from the data in question 2. Also draw a histogram displaying the theoretical probability of head and tail outcomes. Use these to answer questions 3-5.
3. Verify that the sum of the experimental probabilities of flipping heads or tails add up to 1. Check both sets of your data. Show your work.
4. Did you notice that your experimental data from question 2 was closer to the theoretical probability than your data from question 1? Explain briefly using your data to support your answer.
5. Predict the experimental probabilities of flipping heads or tails if you flipped the coin a total of 100 times.

2007-11-15 08:56:05 · 1 answers · asked by Anonymous in Science & Mathematics Mathematics

1 answers

3.) Lets say you got 2 heads and 3 tails. You simply add the experimental probabilities and show that they add up to one:
2/5 + 3/5 = 1
Likewise for the larger sample:
11/25 + 14/25 = 1

4.) Yes because 11/25 = 44% and 14/25 = 56% is closer to 50-50 than 2/5 = 40% and 3/5 = 60%.
You conclusion should be that the larger the sample, the closer the experimental probability is to the theoretical probability.

5.) You should predict experimental probabilities closer to 50-50 than your smaller samples.

2007-11-16 08:40:43 · answer #1 · answered by jsardi56 7 · 0 0

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