Chapter 11 (Active Stats) Randomness
ACT1 Studies of Random Behavior
1.
Data was collected to estimate the proportion of the bar that was red. Red was the higher
probably, being selected 58% of the time
2.
After 100 trials, I was able to be reasonably sure of my estimate.
3.
Data was collected to estimate the proportion of the bar that was red.
4.
No, I don’t need more results to make a satisfactory estimate. It was about the same
ACT2 Studies of Random Behavior2
5.
Data was collected to estimate the proportion of the bar that was red. Again, the red had
a higher probability being 52%
6. 100 observations are needed for me to be reasonably sure of my estimate.
7.
No, no more observations were needed.
8. No, my conclusions wouldn’t be different because the percentage of blue is just as
random as the percentage of red. Also the probabilities are just as equivalent.
9. 0 % is the estimate of the red.
10. 20 trials were needed this time around.
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 Fall '07
 VELLEMANP
 Statistics, Randomness

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