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Mean and standard deviation of the number of heads

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Reference no: EM131747936

Coins. A coin is to be tossed 36 times.

a) What are the mean and standard deviation of the number of heads?

b) Suppose the resulting number of heads is unusual, two standard deviations above the mean. How many extra heads were observed?

c) If the coin were tossed 100 times, would you still consider the same number of extra heads unusual? Explain.

d) In the 100 tosses, how many extra heads would you need to observe in order to say the results were unusual?

e) Explain how these results refute the Law of Averages but confirm the Law of Large Numbers.

Reference no: EM131747936

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