Problem 2 (15 points) The following contingency table contains observed frequencies. Test for independence of the...
The following table contains observed frequencies for a sample of . Column Variable Row Variable A B C P 35 50. 40 Q 15 20. 30 Test for independence of the row and column variables using . What is the p-value? Compute the value of the test statistic (to 2 decimals). What is the p-value?
The following table contains observed frequencies for a sample of 260. Column Variable A B C Row Variable P 10 25 25 35 55 20 10 10 70 Test for independence of the row and column variables using a = .05. Compute the value of the x test statistic (to 3 decimals). The p-value is - Select your answer - What is your conclusion? - Select your answer - that the column variable is not independent of the row variable.
In performing a chi-square test of independence, as the differences between respective observed and expected frequencies _________, the probability of concluding that the row variable is independent of the column variable increases. A. stay the same B. decrease C. increase D. double
3. This question involves a Test of Independence for the following contingency table. Use a = 0.05. Column 1 Column 3 Column 4 Column 2 50 Row 1 Row 2 75 50 100 50 (a) (2 marks) State the appropriate hypotheses. (b) (8 marks) Create a table of Expected Frequencies. (c) (8 marks) Determine the test statistic. (d) (2 marks) Use the p-value approach. What is your conclusion?
The following contingency table presents observed frequencies. 19 14 13 19 2 7 12 15 10 3 23 27 12 24 c D Send data Part 14 Compute the expected frequencies for the row corresponding to A. Round the answers to at least three decimal places. Part 2 of 4 Compute the expected frequencies for the row corresponding to B. Round the answers to at least three decimal places. Connect Math ALEKS Part 3 of 4 Compute the expected frequencies...
please answer all Performing a Chi-Square Independence Test The contingency table shows the results of a random sample of 2200 adults classified by their favorite way to eat ice cream and gender. The expected frequencies are displayed in parentheses. At a = 0.01, can you conclude that the adults' favorite ways to eat ice cream are related to gender? Favorite way to eat ice cream Gender Cup Cone Sundae Sandwich Other Male 600 288 204 24 84 Female 410 340...
Chapter 11, Section 11.3, Problem 021 Consider the following contingency table that is based on a sample survey. Column 1 Column 2 Column 3 Row 1 133 83 84 Row 2 90 52 | 91 | Row 3 1367996 a. Write the null and alternative hypotheses for a test of independence for this table. Ho: Rows and columns are H: Row and columns are b. Calculate the expected frequencies for all cells assuming that the null hypothesis is true. b....
Window Help 12 2 Secion Exencise 9-10 (oritical vaue For the given table of observed frequencies: A 15 7 10 B 3 109 c 16 6 11 (a) Compute the row totals, the column totals, and the grand total (b) Construct the corresponding table of expected frequencies. (c) Compute the value of the chi-square statistic (d) How mamy degrees of freedom are there? (e) tf appropriate, perform a test of independence, using the α-0.05 level of significance, trot appropriate, explain...
Problem 4: Variables that may affect Grades The data set contains a random sample of STAT 250 Final Exam Scores out of 80 points. For each individual sampled, the time (in hours per week) that the student spent participating in a GMU club or sport and working for pay outside of GMU was recorded. Values of 0 indicate the students either does not participate in a club or sport or does not work a job for pay. The goal of...
Problem #1: Consider the below matrix A, which you can copy and paste directly into Matlab. The matrix contains 3 columns. The first column consists of Test #1 marks, the second column is Test # 2 marks, and the third column is final exam marks for a large linear algebra course. Each row represents a particular student.A = [36 45 75 81 59 73 77 73 73 65 72 78 65 55 83 73 57 78 84 31 60 83...