Quantitative methods is used when social realties can be explained and understood by creating an overall view in the form of “statistical picture” of a large population, media content over time, multiple events, or groups of societies>

Which of the following is not one of the three key concepts used in sociology?

When producing knowledge, social scientists based their research on personal theories.

Which of the following is least likely to be a concern among sociologists who study sports?

The mayor is interested in finding a 95% confidence interval for the mean number of pounds of trash per person per week that is generated in city. The study included 120 residents whose mean number of pounds of trash generated per person per week was 31.5 pounds and the standard deviation was 7.8 pounds. Round your answers to TWO decimal places. A.  To compute the confidence interval use a  distribution. B.  What is the margin of error (maximum error)?   C.  With 95% confidence the population mean number of pounds per person per week is between and pounds. D.  If many groups of 120 randomly selected people in the city are studied, then a different confidence interval would be produced from each group. About percent of these confidence intervals will contain the true population mean number of pounds of trash generated per person per week and about percent will not contain the true population mean number of pounds of trash generated per person per week.

Do college students enjoy playing and watching sports the same or do they have a preference for one over the other? Eleven randomly selected college students were asked to rate playing sports and watching sports on a scale from 1 to 10 with 1 meaning they have no interest and 10 meaning they absolutely love it. The results of the study are shown below. Play 6 8 5 9 2 10 4 8 1 6 9 Watch 3 7 5 1 4 6 9 5 2 4 5 Assume the distribution of the differences is normal. What can be concluded at the 0.05 level of significance? (xd = play score – watch score)   A.  H0: d 0       Ha: d 0 B.  Test statistic: C.  p-Value = D.  Decision: E.  Conclusion: There is evidence to make the conclusion that the average college student does have a preference of one over the other.

A fitness center is interested in finding a 90% confidence interval for the mean number of days per week that Americans who are members of a fitness club go to their fitness center. Records of 220 members were looked at and their mean number of visits per week was 2.4 and the standard deviation was 2.1. Round your answers to TWO decimal places. A. To compute the confidence interval use a  distribution. B.  What is the margin of error (maximum error)? C. With 90% confidence the population mean number of visits per week is between and visits. D. If many groups of 220 randomly selected members are studied, then a different confidence interval would be produced from each group. About percent of these confidence intervals will contain the true population mean number of visits per week and about percent will not contain the true population mean number of visits per week.

Are Republicans less likely than Democrats to display the American flag in front of their residence on the Fourth of July? 187 of the 400 Republicans surveyed display the flag on the fourth and 260 of the 500 Democrats surveyed display the flag on the Fourth of July. What can be concluded at the 0.10 level of significance? Identify the course of action. Identify the correct parameter. Identify the number of populations. Identify the appropriate distribution.

Are blonde female college students more likely to have boyfriends than brunette female college students? 219 of the 350 blondes surveyed had boyfriends and 220 of the 400 brunettes surveyed had boyfriends. What can be concluded at the 0.05 level of significance? Identify the course of action. Identify the correct parameter. Identify the number of populations. Identify the appropriate distribution.

A researcher is interested in finding a 95% confidence interval for the mean number minutes students are concentrating on their professor during a one hour statistics lecture. The study included 150 students who averaged 42 minutes concentrating on their professor during the hour lecture. The standard deviation was 12 minutes. Round your answers to TWO decimal places. A. To compute the confidence interval, use the  distribution. B.  What is the margin of error (maximum error)? C. With 95% confidence the population mean minutes of concentration is between and minutes. D. If many groups of 150 randomly selected students are studied, then a different confidence interval would be produced from each group. About percent of these confidence intervals will contain the true population mean number of minutes of concentration and about percent will not contain the true population mean number of minutes of concentration.