In ANOVA, what will be the conclusion when the means of the between groups vary from within groups? a.Accept the null hypothesis b.Reject the null hypothesis c.Conduct main effects d.Conduct interaction effects
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- An HR expert at an insurance company is considering the introduction of personality tests in the process of recruiting sales agents. It is hypothesised that certain personality traits may contribute to being a successful sales agent, and therefore personality profiles can be used to select the best applicants for open positions. The introduction of personality measures in the recruitment process, however, is only meaningful if there is evidence that certain personality characteristics are related to job performance. To test whether success in this occupation is related to personality features, the expert conducts a study, in which a random sample of currently employed sales agents fill in a questionnaire measuring three traits: (1) extraversion, (2) conscientiousness and (3) agreeableness. Each trait is measured on a scale ranging between 0 and 10 points. To test whether the annual total value of insurance policies sold by an agent can be predicted from personality scores, a multiple…Researchers investigate how the presence of cell phones influence the quality of human interaction. Subjects are randomly selected from a population and divided into an experimental group that is asked to leave their phones in the front of the room and a control group that are not asked to leave their cell phones at the front of the room. Subjects are left alone for 10 minutes and then asked to take a survey designed to measure quality of interactions they had with others in the experiment. What statistical test is appropriate?9. A researcher finds that for female applicants, the likelihood of being hired for a job increases as their work experience increases. However, for male applicants, the likelihood of being hired decreases as their work experience increases. This finding would suggestgender and work experience have no effect on likelihood of being hired for a job. a main effect of work experience (little or a lot). an interaction between gender and work experience. a main effect of gender (male or female).
- An HR expert at an insurance company is considering the introduction of personality tests in the process of recruiting sales agents. It is hypothesised that certain personality traits may contribute to being a successful sales agent, and therefore personality profiles can be used to select the best applicants for open positions. The introduction of personality measures in the recruitment process, however, is only meaningful if there is evidence that certain personality characteristics are related to job performance. To test whether success in this occupation is related to personality features, the expert conducts a study, in which a random sample of currently employed sales agents fill in a questionnaire measuring three traits: (1) extraversion, (2) conscientiousness and (3) agreeableness. Each trait is measured on a scale ranging between 0 and 10 points. To test whether the annual total value of insurance policies sold by an agent can be predicted from personality scores, a multiple…Answer true or false to the following statements and explain your answers.a. If the blocking factor in a randomized block design is a random effect factor, the F-test for the effect of the treatment factor is still valid when there is interaction between the treatment and blocking factors.b. The F-test for the effect of the blocking factor in a randomized block ANOVA is still valid when there is interaction between the treatment and blocking factors.c. The presence of interaction between the treatment factor and blocking factor in a randomized block design is easy to assess from interaction plots.Suppose we are interested in the relationship between individuals’ place of residence (rural versus urban) and their political affiliation (Republican versus Democrat). A random sample of 100 individuals yields the following crosstabulation: Political Affiliation Place of Residence Republican Democrat Rural 21 29 Urban 14 36 a) In words, what is the null hypothesis to be tested? b) Is the relationship between place of residence and political affiliation statistically significant at the .05 level? (Be sure to show the statistics that lead to your decision.) c) Compute and interpret an appropriate measure of association for the relationship between these two variables.
- Please send me answer within 10 min!! I will rate you good for sure!! Please solve all the parts with explaination!! 1. A hospital introduces a new order-entry system and wishes to study the impact of this intervention on the number of medication-related adverse events before and after the intervention. Write a non-directional alternative hypothesis for this study. a. Dependent variable: b. Independent variable: c. Hypothesis:In 2015, a survey found that 38% of Americans were supportive of online education for elementary and secondary education. With the increase in contagious viruses, it is of interest if this proportion has changed. In a 2019 poll, 51% of 1028 Americans were supportive of online education for elementary and secondary education. At the 10% significance level, do the data provide sufficient evidence to conclude that the percentage of all American adults who support online education for elementary and secondary education has changed from what was believed in 2015? Choose the choice that gives the null and alternative hypothesis.In 2010, shortly before a country's midterm elections, people in that country were dissatisfied with government and 57% of adults in the country thought that a third major party was needed. In a recent poll, 61% of 1067 adults in the country felt the same way. At the 20% significance level, do the data provide sufficient evidence to conclude that the percentage of all adults in the country who now think that a third major party is needed has changed from that in 2010? Use the one-proportion z-test to perform the appropriate hypothesis test.
- Consider the hypothesis test H0 : μ1 = μ2 against Ha : μ1≠μ2. Suppose that sample sizes n1=15 and n2 = 15, that x̅1 = 6.2 and x̅2 = 7.8, and that s1^2= 4 and s2^2 = 6.25. Assume that σ1^2 = σ2^2 and that the data are drawn from normal distributions. Use α = 0.05.(a) Test the hypothesisThe personality characteristics of business leaders (e.g., CEOS) are related to the operations of the businesses that they lead (Oreg & Berson, 2018). Traits like openness to experience are related to positive financial outcomes and other traits are related to negative financial outcomes for their businesses. Suppose that a board of directors is interested in evaluating the personality of their leadership. Among a sample of n = 16 managers, the sample mean of the openness to experiences dimension of personality was M = 4.50. Assuming that u = 4.24 and o = 1.05 (Cobb-Clark & Schurer, 2012), use a two-tailed hypothesis test with a = .05 to test the hypothesis that this company's business leaders' openness to experience is different from the population. Standard Normal Distribution Mean - 0.0 Standard Deviation 1.0 .7198 .1401 .1401 -3.0 -2.0 -1.0 0.0 1.0 2.0 3.0 -1.08 1.08 Step 1. Ho: ; H;: a = .05. Step 2. The critical region consists of Step 3. For these data the standard error is and…A significant result in an ANOVA indicates that A)the means of two groups are different, B)there is a significant effect of random variance. C)there is a significant effect of systematic variance. D)the intercept of the regression line is not zero.