Paper 7 May/June 2009 MATHEMATICH (9709/7) A Levels
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Jeevan thinks that a six-sided die is biased in favour of six. In order to test this, Jeevan throws the die 10 times. If the die shows a six on at least 4 throws out of 10, she will conclude that she is correct.
a) State appropriate null and alternative hypotheses.
b) Calculate the probability of a Type I error.
c) Explain what is meant by a Type II error in this situation.
d) If the die is actually biased so that the…