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W3 Applications #2

W3 Applications #2 - The significance level is 0.05...

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RES/342 Applications #2 (6 points) Name: Please read this carefully : Type in your name above and complete the following three applications by answering them directly on their respective page that follows this cover sheet. Identify the formula number(s) or type them in, and show all calculations for credit. If you use Excel or other software, you must embed them into the applications and not send as a separate attachment. Use the five step hypothesis testing process for Parts B and C. Each of the three parts is valued at 2 points.
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A. In a particular chi-square goodness-of-fit test there are four categories and 200 observations. The significance level is 0.05. a. How many degrees of freedom are there? b. What is the critical value of chi-square? B. The null and alternative hypotheses are: H O : The cell categories are equal. H 1 : The cell categories are not equal.
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Unformatted text preview: The significance level is 0.05. Category f o A 10 B 20 C 30 D 20 Compute the value of chi-square. State the decision rule: What is your decision regarding Ho? C . Read the following scenario and complete the steps. In Los Angeles there are three network television stations, each with it own evening news program from 6:00 to 6:30 PM. According to a report in this morning’s local newspaper, a random sample of 150 viewers last night revealed 53 watched the news on KNBC (channel 2), 64 watched KABC (channel 7), and 33 viewed KCBS (channel 2). At the 0.05 significance level, is there a difference in the proportion of viewers watching the three channels? 1. State the null and alternative hypothesis. 2. Identify the level of significance: Given at 0.05 3. Calculate the test statistic 4. Formulate the decision rule. 5. Make a decision....
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W3 Applications #2 - The significance level is 0.05...

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