Question

In: Statistics and Probability

In a poll conducted by the General Social Survey, 79% of respondents said that their jobs...

In a poll conducted by the General Social Survey, 79% of respondents said that their jobs were sometimes or always stressful. Two hundred workers are chosen at random. Use the TI-84 Plus calculator as needed. Round your answer to at least four decimal places.

(a) Approximate the probability that 165 or fewer workers find their jobs stressful.

(b) Approximate the probability that more than 158 workers find their jobs stressful.

(c) Approximate the probability that the number of workers who find their jobs stressful is between 152 and 177 inclusive.

Solutions

Expert Solution

The probability that 165 or fewer workers find their jobs stressful is

The probability that more than 158 workers find their jobs stressful is

The probability that the number of workers who find their jobs stressful is between 152 and 177 inclusive is


Related Solutions

No Smoking: The general social survey conducted a poll of 685 adults in which the subjects...
No Smoking: The general social survey conducted a poll of 685 adults in which the subjects were asked whether they agree that the government should prohibit smoking in public places. In addition, each was asked how many people lived in his or her household. The results are summarized in the following contingency table. Household Size 1 2 3 4 5 Agree 66 109 37 28 30 no opinion 26 56 29 19 30 Disagree 51 79 46 48 31 (a)...
Stress at work: In a poll about work, 84% of respondents said that their jobs were...
Stress at work: In a poll about work, 84% of respondents said that their jobs were sometimes or always stressful. Twelve workers are chosen at random. Round the answers to four decimal places. (a) What is the probability that exactly 11 of them find their jobs stressful? (b) What is the probability that more than 9 find their jobs stressful? (c) What is the probability that fewer than 6 find their jobs stressful? (d) Would it be unusual if fewer...
2. The data below are from the 2016 General Social Survey. Respondents were asked to describe...
2. The data below are from the 2016 General Social Survey. Respondents were asked to describe whether their religion was (1) fundamentalist, (2) moderate or (3) liberal. Respondents were also asked whether they believed in evolution from the statement “Human beings developed from animals.” Respondents not believing in evolution said (1) “false” while supporters of evolution said (2) “true”. Which variable below is the independent variable? The dependent variable? Correctly percentage the data in the table. (Do not calculate the...
In the 2008 General Social Survey, incomes of married respondents were classified as above average, average,...
In the 2008 General Social Survey, incomes of married respondents were classified as above average, average, and below average. Respondents also answered a question about marital happiness as not happy, pretty happy, or very happy. The results are below: Marital Happiness Income Not Happy Pretty Happy Very Happy Totals Above Average 123 105 7 235 Average 291 151 17 459 Below Average 172 83 6 261 Totals 586 339 30 955 Conduct an appropriate test to determine whether or not...
Respondents in the 2017 General Social Survey (GSS) were asked “on an average work day, about...
Respondents in the 2017 General Social Survey (GSS) were asked “on an average work day, about how many hours do you have to relax or pursue the activities that you enjoy?”. 244 males responded to the question and 262 females responded. Men reported an average of 3.28 hours per day (with a standard deviation of 2.12 hours) and women reported an average of 2.99 hours per day (sd=2.05). A. Calculate and interpret the 95% confidence interval for relaxation hours for...
In the 2008 General Social Survey, incomes of married respondents were classified as above average, average,...
In the 2008 General Social Survey, incomes of married respondents were classified as above average, average, and below average. Respondents also answered a question about marital happiness as not happy, pretty happy, or very happy. The results are below: Marital Happiness Income Not Happy Pretty Happy Very Happy Totals Above Average 123 105 7 235 Average 291 151 17 459 Below Average 172 83 6 261 Totals 586 339 30 955 Conduct an appropriate test to determine whether or not...
In the 2008 General Social Survey, incomes of married respondents were classified as above average, average,...
In the 2008 General Social Survey, incomes of married respondents were classified as above average, average, and below average. Respondents also answered a question about marital happiness as not happy, pretty happy, or very happy. The results are below: Marital Happiness Income Not Happy Pretty Happy Very Happy Totals Above Average 123 105 7 235 Average 291 151 17 459 Below Average 172 83 6 261 Totals 586 339 30 955 Conduct an appropriate test to determine whether or not...
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....
use the data collected from the 2012 General Social Survey (GSS) in which 1,298 respondents reported...
use the data collected from the 2012 General Social Survey (GSS) in which 1,298 respondents reported on the number of hours they watched tv per day. The results show that the average (mean) number of hours spent watching tv per day is 3.089 hours with a standard deviation of 2.87 hours. 3.) Calculate a 95% confidence interval to estimate the mean number of hours of tv the average American watches per day. Interpret this in English. what does this mean?
Imagine a poll is conducted with a large, representative sample of US adults. Respondents are asked...
Imagine a poll is conducted with a large, representative sample of US adults. Respondents are asked whether they think that the influence of religion in the US is changing. They respond on a scale from 0 to 10 where 0 means religion is becoming much less influential, 5 means the influence of religion is not changing, and 10 means religion is becoming much more influential. The average rating is 3.8 with a 2 point margin of error (95% confidence). The...
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT