In a study, job applicants take a cognitive ability test. Six months later the applicants are measured on their job performance. This is an example of a:A. future validation study.B. concurrent validation study.C. longitudinal validation study.D. predictive validation study
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In a study, job applicants take a cognitive ability test. Six months later the applicants are measured on their job performance. This is an example of a:
A. future validation study.
B. concurrent validation study.
C. longitudinal validation study.
D. predictive validation study
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- A researcher wants to determine if there is a relationship between income earned by siblings and birth order in families of three siblings. What type of study must the researcher use in this situation? A.experimental B.observationalThe Behavioral Risk Factor Surveillance System (BRFSS) is an annual telephone survey designed to identify risk factors in the adult population and reportemerging health trends. The following table summarizes two variables for the respondents: health status and health coverage, which describes whether each respondent had health insurance: Health Status Excellent Very Good Good Fair Poor Total Health No 459 727 854 385 99 2524 Coverage Yes 4198 6245 4821 1634 578 17476 Total 4657 6972 5675 2019 677 20000 If we draw one individual at random, what is the probability that the respondent has health coverage if they have good health? Answer with a decimal rounded to 3 decimal places.In a study examining the permanence of academic learning, Bahrick and Hall (1991) tested knowledge of high school algebra for two groups of participants 50 years after they graduated from high school. One group had received additional college math courses and the other group had received no advanced math courses in college. The following table shows data similar to Bahrick and Halls results. No College Math Additional Math n = 4 n = 8 M = 42 M = 50 s2 = 33.333 s2 = 20 1) Do the data indicate a significant difference between the two groups? Use a two- tailed test with α = .05. Report and interpret r2.
- In the book Business Research Methods (5th ed.), Donald R. Cooper and C. William Emory discuss studying the relationship between on-the-job accidents and smoking. Cooper and Emory describe the study as follows: Suppose a manager implementing a smoke-free workplace policy is interested in whether smoking affects worker accidents. Since the company has complete reports of on-the-job accidents, she draws a sample of names of workers who were involved in accidents during the last year. A similar sample from among workers who had no reported accidents in the last year is drawn. She interviews members of both groups to determine if they are smokers or not. The sample results are given in the following table. On-the-Job Accident Smoker Yes No Row Total Heavy 12 5 17 Moderate 9 10 19 Nonsmoker 13 17 30 Column total 34 32 66 Expected counts are below observed counts Accident No Accident Total Heavy 12 5 17 8.76 8.24…Teen smoking, part I A Vermont study published by the American Academy of Pediatrics examined parental in-fluence on teenagers’ decisions to smoke. A group of stu-dents who had never smoked were questioned about their parents’ attitudes toward smoking. These students werequestioned again two years later to see if they had started smoking. The researchers found that, among the 284 stu-dents who indicated that their parents disapproved of kids smoking, 54 had become established smokers. Among the 41 students who initially said their parents were le-nient about smoking, 11 became smokers. Do these data provide strong evidence that parental attitude influencesteenagers’ decisions about smoking?a) What kind of design did the researchers use?b) Write appropriate hypotheses.c) Are the assumptions and conditions necessary forinference satisfied?d) Test the hypothesis and state your conclusion.e) Explain in this context what your P-value means.f) If that conclusion is actually wrong, which type…In a 1993 article in Accounting and Business Research, Meier, Alam, and Pearson studied auditor lobbying on several proposed U.S. accounting standards that affect banks and savings and loan associations. As part of this study, the authors investigated auditors’ positions regarding proposed changes in accounting standards that would increase client firms’ reported earnings. It was hypothesized that auditors would favor such proposed changes because their clients’ managers would receive higher compensation (salary, bonuses, and so on) when client earnings were reported to be higher. Table (below) summarizes auditor and client positions (in favor or opposed) regarding proposed changes in accounting standards that would increase client firms’ reported earnings. Here the auditor and client positions are cross-classified versus the size of the client firm. (a) Auditor Positions LargeFirms SmallFirms Total In Favor 18 125 143 Opposed 20 14 34 Total 38 139 177 (b) Client…