Daphne mails a survey to 50,000 recent college graduates across America.  The responses indicate overwhelmingly that graduates felt their education helped secure them a better job, but only 6% of the surveys were returned.  What type of bias is most strongly present in Daphne’s study? A.Self-Interest Study B Voluntary Response Bias C Loaded questions D Perceived lack of anonymity E. Response Bias

A professor wants to know which type of instructional mode students had more satisfaction.  The professor randomly selected n = 5 students from each of the following types of classes: online only, hybrid, and face-to face only.  Student were given a satisfaction survey.  Are their differences in student satisfaction among the different instructional modes.  The data are below: Online Hybrid Face-to-Face 3 3 4 3 3 1 3 1 3 2 2 2 2 1 3 Which of the following is the appropriate statistical conclusion?     According to the ANOVA, there was an overall significant difference among the three instructional modes. However, there was not a significant differcene between any two instructional modes using the Tukey's post hoc test.     According to the ANOVA, there was an overall significant difference among the three instructional modes. There was were significant differcene between all two pairs of instructional modes using the Tukey's post hoc test.     According…

A professor wants to know which type of instructional mode students had more satisfaction.  The professor randomly selected n = 5 students from each of the following types of classes: online only, hybrid, and face-to face only.  Student were given a satisfaction survey.  Are their differences in student satisfaction among the different instructional modes.  The data are below: Online Hybrid Face-to-Face 3 3 4 3 3 1 3 1 3 2 2 2 2 1 3 Calculate the Tukey HSD

Consider a recent study that found that watching movies while doing math homework raises a student's understanding of the concepts. This study was conducted by Disney. Is this a voluntary response, self interest, response bias, or loaded question?

Sam has conducted a survey to get more information about healthy diets. He hands his survey out to 100 people in the cafeteria at his college. Only 45 people choose to participate in the survey, leaving 55 people that did not respond. Which type of bias does this scenario best describe?     Response bias     Nonresponse bias     Observer effect     Placebo bias

A social psychologist wanted to determine whether attitudes of men toward abortion were different in rural and urban areas. He prepared a questionnaire and administered it to a group of city dwellers and a group of country dwellers. Each city man was matched with a country man on age, income, and education. High scores indicate positive attitudes toward abortion. Here are the questionnaire scores. Rural Men          Urban Men   22 25 19 23 18 20 17 18 15 12 10 9 6 4 4 3 a.         What statistical method should be used and why? b.       Calculate a 95% confidence interval about the difference in the two populations. c.        Use the CI to test the null hypothesis that rural and urban men have identical attitudes toward abortion.

Are avid readers more likely to wear glasses than those who read less frequently? 289 men in Ohio were selected at random and characterized as to whether they wore glasses and whether the amount of reading they did was above average, average, or below average. The results are presented in the following table: Amount of reading Yes No Above average 42 22 Average 46 76 Below averages 35 68 What is the proportion of men in the sample who wear glasses? What is the proportion of all above average readers who wear glasses?

A social scientist wanted to study the education levels of adults who live in the tristate area of southwestern Pennsylvania, the West Virginia panhandle, and southeastern Ohio. A random sample of 25 middle-aged adults from each region was selected and asked about their highest level of education. The responses are displayed in the table.   The scientist would like to know if these data provide convincing evidence that the distribution of education differs for these regions in the population of all tristate residents. Are the conditions for inference met? No, the random condition is not met. No, the 10% condition is not met. No, the Large Counts condition is not met. Yes, all three conditions for inference are met.

10. A supermarket conducted a survey of 1000 consumers. Their population was "adults who shop for groceries." Use specific examples to explain how the following biases could have had the following effects: a. How could sampling bias have made it seem like adults eat more bread than in reality? b. How could non-response bias have made it seem like adults eat less fruit than in reality? c. How could response bias have made it seem like adults eat more vegetables than in reality? d. How could measurement bias have made it seem like adults drink more coffee than in reality?

Which of the following biases occurs when various groups in a study are assessed differently for an outcome? OA. Selection OB. Reporting OC. Detection OD. Attrition