2011 the carnegie foundation for the advancement

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Unformatted text preview: ! :! < ! For a right ­tailed test !! :! > ! For a two ­tailed test !! :! ≠ ! For the purposes of the hypothesis test, we assume that the null hypothesis is true. © 2011 THE CARNEGIE FOUNDATION FOR THE ADVANCEMENT OF TEACHING A PATHWAY THROUGH STATISTICS, VERSION 1.6, STATWAY™  ­ STUDENT HANDOUT STATWAY STUDENT HANDOUT | 2 Lesson 8.3.1 Hypothesis Tests for Population Proportions 1 Determine the hypothesis for the bottled water problem. A State the null and alternative hypotheses. B Explain why you chose the alternative hypothesis you did. C Will you perform a left ­tailed, right ­tailed, or two ­tailed test? Step 2: Collect the Data After determining the hypotheses, we need to collect data. The most important part of data collection is that the sample be representative of the population. We ensure a representative sample by using random sampling from the population. Once we gather data from our sample we calculate the sample proportion. The process of hypothesis testing requires that the sampling distribution of sample proportions is approximately normal. This occ...
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This document was uploaded on 03/13/2014 for the course MATH 75 at Skyline College.

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