1. Math
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  3. the probability of obtaining heads on a biased coin is...

Question: the probability of obtaining heads on a biased coin is...

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2. Paper 2 Question you may use a calculator. The probability of obtaining heads on a biased coin is o.4. The coin is tossed 600 times. (a) write down the mean number of heads. (i) Find the standard deviation of the number of heads. (b) Find the probability that the number of heads obtained is less than one standard deviation away from the mean. 4 marks [3 marks]
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