15) The study you are reading reports a significant correlation coefficient of -0.5 between home size and hours spent at work. You know this means: as home size gets larger, hours spent at work get smaller there is no relationship between home size and hours spent atwork there is a weak relationship between home size and hours spentat work as home size gets smaller, hours spent at work gets smalls16) You are studying the relationship between exercise and BMIand find a significant correlation of -0.7. Based on this study, if a personincreases her exercise two hours a week you would expect his/her BMI to: decrease decrease by 0.7 pounds increase by 0.7 pounds stabilize17) You are interested determining the difference in theexercise patterns of college students on athletic teams. You randomlysample ten soccer players and ten hockey players who are in their freshman yearof college. If you want to use the t-test you know you must measure exercisepatterns at what level?interval or ratio ordinal nominal All of the above18) Your study examines knowledge gained from your interventionusing an exam score. Your participants complete a pre and post test examwhich is graded on a scale of 0-100%. Which type of analysis would beappropriate? chi square t-test for dependent groups multicollinearity t-test for independent groups19) You are conducting a study with twenty-five randomlyselected participants in a methadone rehabilitation program. You measure thewithdrawal index for all the participants at the beginning of the study, afterone week of daily guided meditation practice, and then after one week on a newherbal supplement. This study design may be problematic because of: lack of independence recall bias carry-over effects degree's of freedom20) Which statistic is most appropriate for measuring thestrength of the association between an exposure and disease outcome in acase-control study?odds ratio relative risk attributable risk in the population student t-test21) Your study takes a group of adults with lupus and asks themabout their previous exposure to Epstein barr, pesticides, and sexuallytransmitted diseases. This is an example of what type of study? cohort chi-square analysis case-control randomized clinical trial22) You read a small study which uses an independent t-test toexamine the difference between the average birth weight of infants withmotherâs who smoke vs. those with mothers who do not smoke. The study hasan alpha of 0.05 and a p value of 0.07. However, a larger study completesthe same analysis and has reported a t-test with a p value of 0.02. Yourealize the smaller study probably made: an overpowered error a type I error a type II error a type III error23) You conduct a study to determine if there is a difference inaverage number of hours slept each week between husbands and wives. Whatwould be an appropriate test? repeat measures ANOVA t-test for dependent groups repeat measures t-test t-test for independent groups24) In January of 2007, a clinic with 300 previously identifiedHIV+ patients performs a routine screening and discovers ten additionalpatients who are HIV+. The incidence of HIV+ patients in this clinic betweenJanuary and February 2007 is: 310 300 10 unable to determine25) You are reading a study which reports a significantcorrelation (r) between smoking and coffee drinking of 0.8. You know thismeans:when participants smoke more they drink less coffee when participants smoke more they drink more coffee when participants smoke more their coffee drinking is decreasedby 75% when participants smoke more they only drink 75% of the coffeethey were drinking
This question was answered on: May 23, 2022
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