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- A graphic representation of a hypothesized causal model is known as a(n): Burchard chart. polygon. areas chart. path diagram. scatter plot.In a study to see if there is a relationship between students’ consumption of alcoholic beverages and their grade point averages, the drinking behavior would be the presumed cause or ____________________________ variable and the grade point average would be the effect or ________________________________________ variable.Do single-parent families tend to be more impoverished than families with two parents? In order to test if there is a relationship between family structure and family income level, family researcher studied a sample of 35 one-parent and 65 two-parent families in a particular city to determine whether their total family income fell below the poverty level. _________________________Family Structure____________________________ Total family Income One Parent Two Parents TOTAL Below poverty level 24 20 44 Not Below Poverty Level 11 45 56 Total 35 65 100 What are the independent and dependent variables.? What is the null hypothesis? What test should we use?…
- A correlational study is designed to A) test causal inferences B) assess the assocation between two measures C)compare the means of three or more groups D) manipulate the independent variablesThe paper "From Dr. Kildare to Grey's Anatomy"† describes several studies of how the way in which doctors are portrayed on television might influence public perception of doctors. One study was described as follows. Rebecca Chory, Ph.D., now an associate professor of communication at West Virginia University, began studying the effect of such portrayals on patients' attitudes toward physicians. Using a survey of 300 undergraduate students, she compared perceptions of physicians in 1992—the end of the era when physicians were shown as all-knowing, wise father figures—with those in 1999, when shows such as ER and Chicago Hope (1994–2000) were continuing the transformation to showing the private side and lives of physicians, including vivid demonstrations of their weaknesses and insecurities. Dr. Chory found that, regardless of the respondents' personal experience with physicians, those who watched certain kinds of television had declining perceptions of physicians' composure and regard…The paper "From Dr. Kildare to Grey's Anatomy"† describes several studies of how the way in which doctors are portrayed on television might influence public perception of doctors. One study was described as follows. Rebecca Chory, Ph.D., now an associate professor of communication at West Virginia University, began studying the effect of such portrayals on patients' attitudes toward physicians. Using a survey of 300 undergraduate students, she compared perceptions of physicians in 1992—the end of the era when physicians were shown as all-knowing, wise father figures—with those in 1999, when shows such as ER and Chicago Hope (1994–2000) were continuing the transformation to showing the private side and lives of physicians, including vivid demonstrations of their weaknesses and insecurities. Dr. Chory found that, regardless of the respondents' personal experience with physicians, those who watched certain kinds of television had declining perceptions of physicians' composure and regard…
- A research design that uses a separate group of participants for each condition (or for each population) is called a____. a. dependent-measures design b. between-subjects design c. repeated-measures design d. within-subjects designThe 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.The St. Lucian Government is interested in predicting the number of weekly riders on the public buses using the following variables: Price of bus trips per week The population in the city The monthly income of riders Average rate to park your personal vehicle City Number of weekly riders Price per week Population of city Monthly income of riders Average parking rates per month 1 192,000 $15 1,800,000 $5,800 $50 2 190,400 $15 1,790,000 $6,200 $50 3 191,200 $15 1,780,000 $6,400 $60 4 177,600 $25 1,778,000 $6,500 $60 5 176,800 $25 1,750,000 $6,550 $60 6 178,400 $25 1,740,000 $6,580 $70 7 180,800 $25 1,725,000 $8,200 $75 8 175,200 $30 1,725,000 $8,600 $75 9 174,400 $30 1,720,000 $8,800 $75 10 173,920 $30 1,705,000 $9,200 $80 11 172,800 $30 1,710,000 $9,630 $80 12 163,200 $40 1,700,000 $10,570…
- The St. Lucian Government is interested in predicting the number of weekly riders on the public buses using the following variables: Price of bus trips per week The population in the city The monthly income of riders Average rate to park your personal vehicle City Number of weekly riders Price per week Population of city Monthly income of riders Average parking rates per month 1 192,000 $15 1,800,000 $5,800 $50 2 190,400 $15 1,790,000 $6,200 $50 3 191,200 $15 1,780,000 $6,400 $60 4 177,600 $25 1,778,000 $6,500 $60 5 176,800 $25 1,750,000 $6,550 $60 6 178,400 $25 1,740,000 $6,580 $70 7 180,800 $25 1,725,000 $8,200 $75 8 175,200 $30 1,725,000 $8,600 $75 9 174,400 $30 1,720,000 $8,800 $75 10 173,920 $30 1,705,000 $9,200 $80 11 172,800 $30 1,710,000 $9,630 $80 12 163,200 $40 1,700,000 $10,570…The St. Lucian Government is interested in predicting the number of weekly riders on the public buses using the following variables: Price of bus trips per week The population in the city The monthly income of riders Average rate to park your personal vehicle City Number of weekly riders Price per week Population of city Monthly income of riders Average parking rates per month 1 192,000 $15 1,800,000 $5,800 $50 2 190,400 $15 1,790,000 $6,200 $50 3 191,200 $15 1,780,000 $6,400 $60 4 177,600 $25 1,778,000 $6,500 $60 5 176,800 $25 1,750,000 $6,550 $60 6 178,400 $25 1,740,000 $6,580 $70 7 180,800 $25 1,725,000 $8,200 $75 8 175,200 $30 1,725,000 $8,600 $75 9 174,400 $30 1,720,000 $8,800 $75 10 173,920 $30 1,705,000 $9,200 $80 11 172,800 $30 1,710,000 $9,630 $80 12 163,200 $40 1,700,000 $10,570…The U.S. Department of Energy’s Fuel Economy Guide provides fuel efficiency datafor cars and trucks (Fuel Economy website, September, 2012). A portion of the data for149 compact, midsize, and large cars is shown in Table 2.13. The data set contains thefollowing variables:Size: Compact, Midsize, and LargeDisplacement: Engine size in litersCylinders: Number of cylinders in the engineDrive: All wheel (A), front wheel (F), and rear wheel (R)Fuel Type: Premium (P) or regular (R) fuelCity MPG: Fuel efficiency rating for city driving in terms of miles per gallonHwy MPG: Fuel efficiency rating for highway driving in terms of miles per gallonThe complete data set is contained in the file named FuelData2012.a. Prepare a crosstabulation of the data on Size (rows) and Hwy MPG (columns). Useclasses of 15–19, 20–24, 25–29, 30–34, 35–39, and 40–44 for Hwy MPG.b. Comment on the relationship beween Size and Hwy MPG.
