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# The network brings together community college faculty

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Unformatted text preview: 2.2 Introduction to Hypothesis Testing TAKE IT HOME A student claims that a 2011 U.S. quarter is not a fair coin. A fair coin is one in which the proportion of flips resulting in heads is exactly 0.50. So an unfair coin is one in which the proportion of heads is different is from 0.5. 1 Give the null and alternative hypotheses you would use to test this claim. H0: Ha: 2 Explain what a type I error would mean for this hypothesis test. 3 Explain what a type II error would mean for this hypothesis test. 4 Suppose you flip a 2011 quarter 100 times and obtain 39 heads. In this case the P ­value would be about 0.03. Interpret this P ­value. 5 Is this P ­value strong enough evidence to reject the null hypothesis at a 0.05 level of significance? Explain. 6 State the conclusion for this hypothesis test, including the P ­value. 7 It is possible that the results oc...
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