Applying chi square test of independence: |
Expected | Ei=row total*column total/grand total | Favor | Indifferent | Opposed | Total |
Democrat | 115.1400 | 85.5000 | 84.3600 | 285 | |
Republican | 86.8600 | 64.5000 | 63.6400 | 215 | |
total | 202 | 150 | 148 | 500 | |
chi square χ2 | =(Oi-Ei)2/Ei | Favor | Indifferent | Opposed | Total |
Democrat | 4.5386 | 0.0731 | 4.9138 | 9.5256 | |
Republican | 6.0163 | 0.0969 | 6.5137 | 12.6269 | |
total | 10.5550 | 0.1700 | 11.4275 | 22.1525 | |
test statistic X2 = | 22.152 | ||||
p value = | 0.0000 |
since p value <0.05
reject the null hypothesis and conclude at a=0.05 .....are related
Question 9 S points Save Answer A survey of 285 Democrats and 215 Republicans were asked...
In order to receive credit for the homework, you must show all steps for doing a chi square test of independence. These steps include: null and alternative hypothesis); critical value; calculations (show work); reject or accept H; results statement using no relationship or a relationship. A random sample of 500 voters were selected and asked their opinion on tax reform. The sample was further divided into Democrats and Republicans. The following table gives the results of the poll. At a...
Party Affiliation and Opinion on Tax Reform example. 83 favor indifferent opposed total democrat 138 64 285 republican 64 67 84 215 total 202 150 148 500 Here are the formulae. Given that chi square = a (f. – fo)? /fe , and that fe= (row marginal*column marginal)/sample size, and that df = (# rows - 1) * (# columns - 1) a) How many "degrees of freedom" are associated with this table? b) State the null hypothesis for this...
affiliation and opinion on a tax reform bill. Te ress of this survey are su contingency table, Round all answers to four decimal places A random sample of 500 U.S. aduits is questioned re regarding their political total democrat republican total favor 138 64 202 indifferent 83 67 opposed 64 84 148 285 500 (4)Problem 7A: Se managers-claim -that equal -amon t up the hypótheses for a chi square fest of independence to test the for albs-were-on-hend-at the 55 level...
Two random samples were drawn from members of the U.S. Congress. One sample was taken from members who are Democrats and the other from members who are Republicans. For each sample, the number of dollars spent on federal projects in each congressperson's home district was recorded on in Home Districts Less than S to 10 More than 5 Billion Billion 10 biltion Party Row Total Republicarn Column Total 92 (0) Make a cluster bar graph showing the percentages of Congress...
document or pdf with your answer. Your solution to each problem must have the following: • The null and alternative hypotheses with the appropriate symbols. • The significance level of the test. If it is not given use a significance level of 0.05. • The P-value for the test. • State whether you reject or fail to reject the null hypothesis. In other words, compare the P-value to the significance level to decide whether to reject or fail to reject...
9 points) A news article reports that "Americans have differing views on two potentially inconvenient and invasive practices that airports could implement to uncover potential terrorist attacks." This news piece was based on a survey conducted among a random sample of 1163 adults nationwide, interviewed by telephone November 7-10, 2010, where one of the questions on the survey was "Some airports are now using 'full-body' digital x-ray machines to electronically screen passengers in airport security lines. Do you think these...
Kelang e. 2 IUUIS, J9 Ulules, 15 Selurus. Question Completion Status: QUESTION 6 4 points Save Answer For which of the following scenarios would an Analysis of Variance (ANOVA) be appropriate? Determining if the distribution of party affiliation (Democrat, Republican, Independent) has changed since the last election Determining if the proportion of the population that are left handed is more than 10% Determining whether Income Level (Low, Middle, High) and Credit Score (Poor, Fair, Good, Excellent) are independent Determining if...
Select the BEST answer for each of the questions below (I true, F- false). Cirele the letter that corresponds with the answer you have selected. Each question is worth 2 points. [Total 40 points) Answer uestion E1. Power is the ability to reject the null hypothesis when it should be rejected 2. With curvilinear data, the Pearson r statistic is an appropriate, accurate statistical tool In a research report, the term statistically significant is used to indicate that the null...