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(1 point) Use software to test the null hypothesis of whether there is a relationship between...
Use software to test the null hypothesis of whether there is a relationship between the two...
Use software to test the null hypothesis of whether there is a relationship between the two classifications, A and B, of the 3×3 contingency table shown below. Test using α=0.01. NOTE: You may do this by hand, but it will take a bit of time. B1 B2 B3 Total A1 40 68 55 163 A2 40 44 77 161 A3 64 71 63 198 Total 144 183 195 522 (a) χ2= (b) Find the degrees of freedom. (c) Find the...
Use software to test the null hypothesis of whether there is a relationship between the two...
Use software to test the null hypothesis of whether there is a relationship between the two classifications, A and B, of the 3×3 contingency table shown below. B1 B2 B3 Total A1 44 68 42 154 A2 53 70 48 171 A3 72 56 75 203 Total 169 194 165 528 Test using ?=0.05. (a) ?2= (b) Find the degrees of freedom. (c) Find the critical value. ?2=
7. You are testing the null hypothesis that there is no linear relationship between two variables,...
7. You are testing the null hypothesis that there is no linear relationship between two variables, X and Y. From your sample of n=18, you determine that b1=4.4 and Sb1=1.7. a. What is the value of tSTAT? b. At the α=0.05 level of significance, what are the critical values? c. Based on your answers to (a) and (b), what statistical decision should you make? d. Construct a 95% confidence interval estimate of the population slope, β1. 8. You are testing...
ou are testing the null hypothesis that there is no relationship between two variables, X and...
ou are testing the null hypothesis that there is no relationship between two variables, X and Y. From your sample of you n=20 determine that SSR= 80 and SSE=20. What is the value of FSTAT? At the a= 0.05level of significance, what is the critical value? Compute the correlation coefficient by first computing r^2 and assuming the b1 is negative. r^2= r= Find the test statistic tSTAT= Determine the critical values of t. The lower critical value is The upper...
Suppose you test null hypothesis Ho : μι_Ha versus Ha : μ.μ2 , software gives 12.3 degrees of fre...
suppose you test null hypothesis Ho : μι_Ha versus Ha : μ.μ2 , software gives 12.3 degrees of freedom for your t test. Answer the following questions: a) If test statistics t-2.25 5, use the rejection region to decide if Ho be rejected or not at a .0.05? Include a sketch, clearly label critical value(s) and rejection and nonrejection regions. b) If test statistics was t-1.14, use a 0.05, compute the p-value and decide if Ho b rejected or not...
1. A researcher intends to use a Chi2 test for Goodness of Fit to determine whether...
1. A researcher intends to use a Chi2 test for Goodness of Fit to determine whether there is any preference between 10 brands of cookies. What is the critical Chi2 value for a sample of n = 300 participants and p < .01? A. 20.48 B. 11.07 C. 16.92 D. 18.31 E. 21.67 2. A researcher conducted a study on a sample of n = 80 undergraduates to evaluate preferences among students for four different textbooks for the Introduction to...
1. You want to test whether you can reject the null hypothesis that a population mean...
1. You want to test whether you can reject the null hypothesis that a population mean is greater than or equal to 10. To do this, you collect a random sample of size 500 from the population, and you calculate that the sample mean and sample standard deviation are 8.6 and s, respectively. Which of the following is true? a. If s is any value between 11 and 13, you can reject the null hypothesis at the 5% significance level....
please use excel if possible to show regression model and answer The Central Company manufactures a...
please use excel if possible to show regression model and
answer
The Central Company manufactures a certain specialty item once a month in a batch production run. The number of items produced in each run varies from month to month as demand fluctuates. The company is interested in the relationship between the size of the production run (x) and the number of hours of labor (v) required for the run. The company has collected the following data for the ten...
Suppose a study on the relationship between gender and political party included 200 men and 200...
Suppose a study on the relationship between gender and political party included 200 men and 200 women and found 180 Democrats and 220 Republicans. Is that information sufficient for you to construct a contingency table for the study? a. Yes b. No For a chi-squared test statistic of 5.02, we would reject the null hypothesis. Select one: True False
To test the relationship between gender and ratings of a promiscuous partner, a group of men...
To test the relationship between gender and ratings of a promiscuous partner, a group of men and women was given a vignette describing a person of the opposite sex who was in a dating relationship with one, two, or three partners. Participants rated how positively they felt about the individual described in the vignette, with higher ratings indicating more positive feelings. Source of Variation SS df MS F Gender 5 Promiscuity Gender × Promiscuity 142 Error 570 114 Total 827...
suppose you test null hypothesis Ho : μι_Ha versus Ha : μ.μ2 , software gives 12.3 degrees of freedom for your t test. Answer the following questions: a) If test statistics t-2.25 5, use the rejection region to decide if Ho be rejected or not at a .0.05? Include a sketch, clearly label critical value(s) and rejection and nonrejection regions. b) If test statistics was t-1.14, use a 0.05, compute the p-value and decide if Ho b rejected or not...
please use excel if possible to show regression model and
answer
The Central Company manufactures a certain specialty item once a month in a batch production run. The number of items produced in each run varies from month to month as demand fluctuates. The company is interested in the relationship between the size of the production run (x) and the number of hours of labor (v) required for the run. The company has collected the following data for the ten...
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