Question 2 [4 marks]
a) Do you agree with this sentence? “If something has a probability of 0.7 it can be expected to happen about 7 times as often as its opposite”. Explain your answer.
b) A standard pack of 52 cards is shuffled. You deal one card at a time until a seven turns up.
You have gone through 8 cards and still not seen a seven. What is the chance of getting a seven on the 9th card?
c) Draw small-scale tree diagrams to work out each of the following:
i. The probability of obtaining two tails with two coins.
ii. The probability of obtaining four heads with four coins.
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