W3 Applications #2

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

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
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.
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
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.
Background image of page 2
Background image of page 3
This is the end of the preview. Sign up to access the rest of the document.

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 mornings 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....
View Full Document

This note was uploaded on 10/10/2010 for the course STATS Stats301 taught by Professor Regis during the Spring '10 term at DeVry Irvine.

Page1 / 3

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

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online