OK, now we have \"many\"... with the quarters anyway... Can someone tell me the
ID: 2960126 • Letter: O
Question
OK, now we have "many"... with the quarters anyway... Can someone tell me the probability of getting a head with our standard quarter trials? so we have Erin with 11H and 4T, Theresa with 18H and 12 tails, and Susan with 11 heads and 4 Tails... I'll even do it quick 35 times... I get: 22 heads, 13 tails. Now calculate proportions... we have 4 proportions to calculate, 2 with sample size n=15, one with sample size n=30 and one with sample size n=35. We can combine them all and say we have a sample size of n=95. What proportions do we get... does it seam as the sample size gets larger that these proportions tend to get closer and closer to a certain number? What is that number? ~TRIAL NUMBER HEADS TAILS
1 11 4
2 11 4
3 18 12
4 22 13
5 16 4
TOTAL 78 37
Explanation / Answer
Probability (assuming a fair coin) is 0.5 so the law of large numbers says the higher the sample size, the more likely we are to get close to 0.5. Supposedly some statistician in a WWII prison camp flipped a coin 25,000 times and kept track of the outcomes. He got very close to 12,500 of each.
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