Question

In: Statistics and Probability

Satisfied?A poll taken by the General Social Survey in 2010 asked people in the United States...

Satisfied?A poll taken by the General Social Survey in 2010 asked people in the United States whether they were satisfied with their financial situation. A total of 478 out of 2038 people said they were satisfied. The same question was asked in 2014, and 698 out of 2532 people said they were satisfied.

a. Construct a 95% confidence interval for the difference between the proportion of adults who said they were satisfied in 2014 and the proportion in 2010.

b. A sociologist claims that the proportion of people who are satisfied increased from 2010 to 2014 by more than 0.05. Does the confidence interval contradict this claim?

Solutions

Expert Solution

orchestra answered 2 years ago
Next > < Previous

Related Solutions

A 2010 poll asked people in the United States whether they were satisfied with their financial...
A 2010 poll asked people in the United States whether they were satisfied with their financial situation. A total of 338 out of 833 people said they were satisfied. The same question was asked in 2012 , and 304 out of 1156 people said they were satisfied. Part 1 of 2 Your Answer is correct (a) Construct a 99.8% confidence interval for the difference between the proportions of adults who said they were satisfied in 2012 and 2010 . Let...
A 2010 poll asked people in the United States whether they were satisfied with their financial...
A 2010 poll asked people in the United States whether they were satisfied with their financial situation. A total of 338 out of 833 people said they were satisfied. The same question was asked in 2012 , and 304 out of 1156 people said they were satisfied. Part: 0 / 2 0 of 2 Parts Complete Part 1 of 2 (a) Construct a 99.8% confidence interval for the difference between the proportions of adults who said they were satisfied in...
The 2010 General Social Survey asked the question: “For how many days during the past 30...
The 2010 General Social Survey asked the question: “For how many days during the past 30 days was your mental health, which includes stress, depression, and problems with emotions, not good?” Based on responses from 1,151 US residents, the survey reported a 95% confidence interval of 3.40 to 4.24 days in 2010. (a) Interpret this interval in the context of the data. (b) What does “95% confidence” mean? Explain in the context of the application. (c) Suppose the researchers think...
The 2010 General Social Survey asked the question: "For how many days during the past 30...
The 2010 General Social Survey asked the question: "For how many days during the past 30 days was your mental health, which includes stress, depression, and problems with emotions, not good?" Based on responses from 1,151 US residents, the survey reported a 95% confidence interval of 3.40 to 4.24 days in 2010. (a) Interpret this interval in context of the data. 95% of surveys will report a mean number of ''not good'' days in the past 30 is between 3.40...
The 2010 General Social Survey asked 1,259 US residents: "Do you think the use of marijuana...
The 2010 General Social Survey asked 1,259 US residents: "Do you think the use of marijuana should be made legal, or not?" 48% of the respondents said it should be made legal. 1. The value 48% is a... A. sample statistic B. population parameter 2. Construct a 95% confidence interval for the proportion of US residents who think marijuana should be made legal, and interpret it in the context of the data. Round your results to 3 decimal places. (...
Relaxing after work. The 2010 General Social Survey asked the question: "After an average work day,...
Relaxing after work. The 2010 General Social Survey asked the question: "After an average work day, about how many hours do you have to relax or pursue activities that you enjoy?" to a random sample of 1130 Americans. A 93% confidence interval for the mean number of hours spent relaxing or pursuing activities they enjoy was [1.16, 1.84]. (a) Interpret this interval in context of the data: "There is a 93% chance that the average number of hours spent by...
1. The General Social Survey (2008) asked a random sample of people whether they agree with...
1. The General Social Survey (2008) asked a random sample of people whether they agree with the following statement: A husband’s job is to earn money; a wife’s job is to take care of the home. Based on this data (displayed below), conduct a chi-square hypothesis test to assess whether there are statistically significant gender differences in feelings about gender roles ( = 0.05). Male Female Total Agree 181 195 376 Neither 142 145 287 Disagree 290 413 703 Total...
1. The General Social Survey (2008) asked a random sample of people whether they agree with...
1. The General Social Survey (2008) asked a random sample of people whether they agree with the following statement: A husband’s job is to earn money; a wife’s job is to take care of the home. Based on this data (displayed below), conduct a chi-square hypothesis test to assess whether there are statistically significant gender differences in feelings about gender roles ( = 0.05). Male Female Total Agree 183 192 375 Neither 143 140 283 Disagree 288 412 700 Total...
In 2012, the General Social Survey asked a random sample of adults, "Compared to most people,...
In 2012, the General Social Survey asked a random sample of adults, "Compared to most people, how informed are you about politics?" Suppose that the following are the data classified by their responses to this question and their age group (the data has been modified slightly for testing purposes): Not at All A little Somewhat Very Extremely Age 20-29 7 29 28 13 0 Age 30-39 16 29 56 22 8 Age 40-49 3 24 50 26 14 Age 50...
a gallup poll conducted in 2012 asked people do you think the united states benefit from...
a gallup poll conducted in 2012 asked people do you think the united states benefit from having a clwss of rivh people. in reponse 80^
ADVERTISEMENT
Subjects
ADVERTISEMENT
Latest Questions
ADVERTISEMENT