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1 / 1 ptsAn experiment to determine the most effective way to teach safety principles applied four different teaching methods. Some employees were given programmed instruction booklets and worked through the course at their own pace. Other employees attended lectures. A third group watched a television presentation, and a fourth group was divided into small discussion groups. A highof 10 was possible. A sample of five tests was selected from each group. The test grade results were:At the 0.01 level, what is the critical value?1.001.963.245.29The numerator or treatment degrees of freedom are k - 1 = 4 - 1 = 3. The denominator or error degrees of freedom are n - k = 20 - 4 = 16. Based on the "Critical values of the F distribution at a 1 percent level of significance" table, the critical value of F is 5.29.Question 101 / 1 ptsWhen the null hypothesis for an ANOVA analysis comparing four treatment means is rejected, _________________
Two comparisons of treatment means can be madeFour comparisons of treatment means can be madeSix comparisons of treatment means can be madeEight comparisons of treatment means can be madeUse the following formula to compute the number of combinations: .Question 111 / 1 ptsA manager at a local bank analyzed the relationship between monthly salary and three independent variables: length of service (measured in months), gender (0 =female, 1 = male) and job type (0 = clerical, 1 = technical). The following ANOVA summarizes the regression results:Based on the hypothesis tests for the individual regression coefficients, ____________.All the regression coefficients are not equal to zero"Job" is the only significant variable in the modelOnly months of service and gender are significantly related to monthly salary
Question 121 / 1 ptsThe variance inflation factor can be used to reduce multicollinearity by _________.