lesson8-2-1student

# The hypothesis testing process now that we have looked

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Unformatted text preview: In this case we are given a research question. We can turn it into a claim by making it a statement: “The average BMI for American teenagers and Australian teenagers is different.” A Identify the population(s). B What is the variable being examined for individuals in the population(s)? Is it categorical or quantitative? C Identify the parameter(s). D Is this claim about a population proportion, a population mean, a comparison of two population proportions, or a comparison of two population means? The Hypothesis Testing Process Now that we have looked at the types of claims that can be tested using a hypothesis test, we will look at the four steps of a hypothesis test. Step 1: Determine the Hypotheses A hypothesis is an educated guess that can be supported or refuted by data. The hypotheses are based on the research question and the claim we are testing. We will examine how to determine the hypotheses in the remainder of this lesson. Step 2: Collect the Data We must make sure that the sample we use is representative of the population. Recall that this means we need a sample that is randomly drawn from the population. We use this data from the sample to calculate a statistic, such as a sample proportion or sample mean. The statistic we calculate is an estimate of the parameter. Step 3: Assess the Evidence © 2011 THE CARNEGIE FOUNDATION FOR THE ADVANCEMENT OF TEACHING A PATHWAY THROUGH STATISTICS, VERSION 1.6, STATWAY™  ­ STUDENT HANDOUT STATWAY INSTRUCTOR NOTES | 4 Lesson 8.2.1 Testing a Hypothesis We look at how strongly the data from the sample supports the claim we are testing. We will investigate methods for assessing the evidence provided by the data in the next lesson. Step 4: State...
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