Statistics For Social Understanding With Stata And SPSS 2nd Edition Nancy Whittier , Tina Wildhagen , Howard Gold - Solutions

Unlock the full potential of your studies with our comprehensive solutions for "Statistics For Social Understanding With Stata And SPSS 2nd Edition" by Nancy Whittier, Tina Wildhagen, and Howard Gold. Access a wide array of resources including an online answers key, detailed solutions manual, and step-by-step answers. Our solved problems section and test bank offer a deep dive into chapter solutions, providing thorough questions and answers. Ideal for instructors and students alike, our instructor manual and textbook solutions are available for free download. Enhance your learning journey with our expertly crafted solutions PDF, designed to assist you in mastering every topic effortlessly.

What does what you know about regression contribute to your understanding of infant health in developing countries?
Make up a set of 5 data points (pairs of scores) that have an intercept of 0 and a slope of 1.(There are several ways to solve this problem, so think about it a bit.)
Generate and for the first five cases of the data in Table 10.2.
In the chapter we saw a study by Trzesniewski et al. (2008) on trends in narcissism scores over time. They also reported data on self-enhancement, which is the tendency to hold unrealistically positive views of oneself. The measure of self-enhancement (SelfEn) was obtained by asking students to
Using the data on self-enhancement given in Exercise 10.16, add two scores to each year, keeping the year mean unchanged. (For example, if the 1982 mean SelfEn score was 0.40, you could make two other scores for that year by adding and subtracting .03 from 0.40.)This will give you pairs of scores.
The following data represent the actual heights and weights referred to in Chapter 9 for male college students.Height Weight Height Weight 70 150 73 170 67 140 74 180 72 180 66 135 75 190 71 170 68 145 70 157 69 150 70 130 71.5 164 75 185 71 140 74 190 72 142 71 155 69 136 69 170 67 123 70 155 68
The following data are the actual heights and weights referred to in Chapter 9 of female college students:Height Weight Height Weight 61 140 65 135 66 120 66 125 68 130 65 118 68 138 65 122 63 121 65 115 70 125 64 102 68 116 67 115 69 145 69 150 69 150 68 110 67 150 63 116 68 125 62 108 66 130 63
Use your scatterplot of the data for students of your own gender and observe the size of the residuals. (Hint: You can see the residuals in the vertical distance of points from the line.)What is the largest residual for your scatterplot?
Given a male and a female student who are both , how much would they be expected to differ in weight? (Hint: Calculate a predicted weight for each of them using the regression equation specific to gender.)
Write a paragraph summarizing the results in Table 10.6 that is comparable to the paragraph in Chapter 9, Section 9.14(Summary and Conclusions of Course Evaluation Study)describing the results of the correlational analysis.
Wainer (1997) presented data on the relationship between hours of TV watching and mean scores on the 1990 National Assessment of Educational Progress (NAEP) for eighth-grade mathematics assessment. The data follow, separated for boys and girls.Hours TV Watched 0 1 2 3 4 5 6 Girls NAEP 258 269 267
There is some really excellent material on regression at the University of Newcastle in Australia. The address is http://surfstat.anu.edu.au/surfstat-home/surfstat-main.html Go to this site and check both the links for “Statistical Inference” and for “Hotlist for Java Applets.” The Java
The Pew Research Center asked the same group of voters who were confirmed to have voted for Donald Trump in the 2016 presidential election to rate Trump on a feeling thermometer in April 2016 and March 2018. Table 6.8 shows how the group falls into four categories: (1) “skeptics,” who rated
The College Republicans at a large university want to hold a discussion between an everyday Trump voter who has been disillusioned and one who has maintained warm feelings about Trump. The College Republicans get access to the group of Trump voters described in Problem 1 to invite two voters to
A woman is frustrated with her online dating experience, feeling that it has made her define her ideal partner too specifically. She wants someone who likes vegetables, graduated from college, and loves dogs. She has agreed to invite one person on a date from a list of ten people generated by her
The woman’s friends persuade her to go on one date with all ten people on the list from Table 6.9. She will go on dates with each of the ten people in random order.a. Use the Multiplication Rule to find the probability that the five first dates will be with someone who has graduated from
Figure 6.18 shows the distribution of wealth for American households, according to the 2016 Survey of Consumer Finances, administered by the Federal Reserve Board.a. What is the probability that a value for household wealth chosen randomly from the sample will fall between $10,300 and $1,186,000?b.
According to the wealth data from Problem 5, the ratio of the value at the 90th percentile to the value at the 25th percentile is
In other words, households that fall at the 90th percentile for wealth have about 115 times as much wealth as households at the 25th percentile. We know from Figure 6.18 that the distribution of household wealth in the United States is extremely skewed to the right. However, imagine that we asked
Draw Figure 6.19 with two x axes: 90:25 ratio and standard deviations.On each axis, label the appropriate values for the mean and one, two, and three standard deviations away from the mean.b. What percentage of respondents estimated the 90:25 ratio to fall between 60 and 90? 45 and 105? 30 and 120?
How much higher is 115 than the mean estimate of the ratio among American adults?How much higher is 115 than the mean estimate in standard deviation units?d. Use the normal table to find the probability that an estimate of the 90:25 ratio would fall above 115.e. What is the probability that a
Say that the mean number of hours per day that teenagers around the world listen to music is normally distributed, with a mean of 5 and a standard deviation of 90 minutes.a. What is the probability that a randomly selected teenager will listen to music for less than 1.5 hours per day? Explain how
Imagine that the distribution of daily hours of music listened to by teenagers from Problem 7 was still normally distributed and had the same mean, 5, but a standard deviation of 1 hour. Find the score associated with the 75th percentile for the distribution and explain why it’s different from
This year, two sections of Metaphysics are being taught at State University during the fall semester, one by a new professor who would like to see more students master the material and the other by a veteran professor who believes that he must hold a very high standard or students will not try to
Over the last few seasons, a college track coach has been disappointed with her long jumpers’ performance. In preparation for recruitment season, she decides that she will recruit only high school long jumpers whose longest jump would be beat by no more than 20% of college long jumpers
Use the “display” command to find the probability that a randomly selected registered nurse would make more than $38.00 per hour.
Use the Complement Rule directly in the “display” command to find the same probability from Problem 1.
We want to know the mean hourly wage for registered nurses associated with the 30th percentile. Use the “display” command to find the wage.
Open GSS2016.sav and use the “Descriptives” procedure to generate a standardized version of the emailhr variable.
Look at the “Data View” window to find the z-score that corresponds to 0 hours of email per week.
Confirm that the value that you gave for Problem 2 is correct using the following information: Mean email hours per week is 6.89, with a standard deviation of 11.37.
Open WVSWave6.sav and use the “Descriptives” procedure to generate summary statistics for V140 in the full sample.
What are the mean and standard deviation for V140?
Use the “Select Cases” procedure to draw a single random sample of one hundred cases from the full sample.
What are the mean and standard deviation for V140 in this smaller sample?Compare them to those statistics for the full sample.
Are there one hundred values for V140 in the sample of one hundred? If not, explain why.
Reopen the original WVS data file and use the “Select Cases” procedure to draw a second single random sample of one hundred cases from the full sample.
Compare the mean for this random sample to that for the first random sample. Are the means different? If so, why?
Open WVSWave6.dta and use the “summarize” command to generate summary statistics for V140 in the full sample.
What are the mean and standard deviation for V140?
Use the “sample” command to draw a single random sample of one hundred cases from the full sample.
What are the mean and standard deviation for V140 in this smaller sample?Compare them to those statistics for the full sample.
Are there one hundred values for V140 in the sample of one hundred? If not, explain why.
Now close this smaller sample WVS data file and reopen the original WVS data file. Use the “bootstrap” command to generate one hundred samples, each with one hundred cases. In the same command, tell Stata to record the mean of V140 for each of the one hundred samples and save them in a new data
Use the “summarize” command to generate the mean and standard error of the one hundred sample means.
Use the “histogram” command to generate a histogram of the means for V140.Does it look like a normal distribution?
Say that the proportion of all American adults who are unaffiliated with any religion is 23%.a. What is the probability of selecting a random sample of 200 people in which at least 30% are religiously unaffiliated?b. What is the probability of selecting a random sample of 200 people in which
A polling firm has declared Beyoncé among the top five respected global celebrities.The distribution of her favorability rankings, measured on a scale from 0 to 100, in a random sample of one hundred respondents, is shown in Figure 7.24.a. Beyoncé’s mean favorability ranking in the sample is
What is the standard error of the sampling distribution?Explain what the standard error means in words.b. Use the information from Part a to draw the sampling distribution for Beyoncé’s favorability ratings if the polling firm were to take many repeated samples. Be sure to label the appropriate
The students in a large statistics course are completing an extra credit project that seeks to demonstrate how sampling distributions work. One hundred students are participating in the project, and they break up into pairs, with each pair surveying a random sample of forty fellow students. Each
The American Community Survey collects information about the population in every U.S. county. The average household size in twenty samples of fifty randomly selected counties is shown in Table 7.2.a. An incredulous observer doubts that these county means are correct. After all, he knows of many
A researcher who wants to study income inequality in counties across the United States is excited to learn that he can access data for every county from the American Community Survey. His plan is to draw a sample of 100 counties from the entire population of more than 3,000 counties. To assess the
For each part below, tell whether the data are population parameters or sample statistics, specify whether the information of interest is a mean or proportion, and identify the symbol that should be used to denote it.a. A study of seventy-five employed adults in Portland, Oregon, found that seven
Figure 7.25 shows two pairs of distributions, A and B, with each pair drawn from the same population of means.• In Pair A, the distribution on the left has 25 sample means (N = 100), and the one on the right has 100 sample means (N = 100).• In Pair B, the distribution on the left has 200 sample
The Parent Teacher Organizations (PTOs) at all ten high schools in a large school district decided to sponsor a study of students’ social media use. Random samples of students were drawn from each school. Table 7.3 shows the proportion of students who have ever taken a complete break from social
Two friends decided that they could not trust cable news shows to report accurate information about the public’s opinion about legalized abortion. One friend, a regular viewer of a liberal-leaning channel, felt that the public’s support for legalized abortion was overstated in shows on that
The sample of support for legalized abortion (see Figure 7.26) has a standard deviation of 3.66. Compare this standard deviation to the standard error of the sampling distribution of mean support that you calculated for Part c of Problem9. Explain what each statistic means. Then, explain why one is
Open WVSWave6.sav. Use the “Explore” procedure to generate a 90% confidence interval for V203A.
According to the output, how many respondents answered this question, and what is the mean response? Does the mean suggest, generally, that people support or oppose prostitution?
What is the standard error of the sample mean, according to the output? Based on information from the output, explain why the standard error is so small.
What is the 90% confidence interval for the mean, according to the output?Explain what this particular confidence interval means in words.
Use the appropriate “Explore” procedure to generate a 90% confidence interval for neverpros.
According to the output, what percentage of respondents said that prostitution is never justified? Is this percentage surprising, given the sample mean of V203A? Explain your answer.
According to the output, what is the 90% confidence interval for the percentage of people who believe that prostitution is never justified? Explain what the confidence interval means in words.
Open WVSWave6.dta. Use the appropriate “ci” command to generate a 90%confidence interval for V203A.
According to the output, how many respondents answered this question, and what is the mean response? Does the mean suggest, generally, that people support or oppose prostitution?
What is the standard error of the sample mean, according to the output? Based on information from the output, explain why the standard error is so small.
What is the 90% confidence interval for the mean, according to the output?Explain what this particular confidence interval means in words.
Use the appropriate “ci” command to generate a 90% confidence interval for neverpros.
According to the output, what percentage of respondents said that prostitution is never justified? Is this percentage surprising, given the sample mean of V203A? Explain your answer.
According to the output, what is the 90% confidence interval for the percentage of people who believe that prostitution is never justified? Explain what the confidence interval means in words.
A researcher is analyzing data from a random sample of cigarette smokers older than the age of sixteen. She uses the sample data to estimate the average age of all cigarette smokers. Imagine that the researcher’s confidence interval is the one shown in Figure 8.13.a. According to Figure 8.13,
Say that a researcher drew 200 independent samples of equal size from a population.If the researcher constructed 95% confidence intervals for each sample, how many confidence intervals would you expect to include the population parameter? How many would you expect to exclude it?
In a random sample of households headed by a couple, 8.5% of them were headed by a same-sex couple.a. If the sample size is 780, find the standard error.b. Find the 90% confidence interval for the sample proportion of households headed by same-sex couples.c. Explain in words what the confidence
The standard error for a 99% confidence interval for a proportion is .032.a. Explain what this standard error means in words.b. If we change the 99% confidence interval to a 95% confidence interval, what happens to the standard error?
The Gini coefficient is a measure of inequality, ranging from 0 to 1, with 0 indicating perfect equality, where everyone earns the same income, and 1 indicating total inequality, where one person earns all of the income. The higher the Gini coefficient, the greater the inequality. Sometimes the
Imagine that you are calculating 99% confidence intervals around a sample proportion and a sample mean from the same sample of size fifty.a. What is the appropriate z-score for the confidence interval of the proportion?Explain why.b. What is the appropriate t-value for the confidence interval of
In a 2017 probability sample of 2,023 people aged fifteen to twenty-four, the Public Religion Research Institute (PRRI) found that 37% of young women and 30% of young men had volunteered for a group or cause they cared about. Say that PRRI surveyed 1,072 women and 951 men.a. The students in a
Imagine that the samples of young men and women described in Problem 7 were seventy and thirty-eight, respectively.a. Calculate the standard errors for men and women with these new sample sizes.b. Calculate the margin of error for the 80% confidence intervals using the standard errors from Part
The comedian Kevin Hart famously jokes about his short stature, even naming his first ever comedy tour “I’m a Grown Little Man.” To build publicity for his latest tour, Hart decides to hold a contest between two towns, Smallville and Anytown, for a free performance open only to residents of
The 99% confidence intervals for the mean height of men in Smallville and Anytown, as discussed in Problem 9, are 67.4 to 68.6 inches for Smallville and 67.8 to 70.2 inches for Anytown.a. What are the ranges of these 99% confidence intervals?b. Compare the range of each town’s 99% confidence
Which confidence intervals are wider, the 80% or 99%? Explain why.c. Does Smallville or Anytown win a free concert from Kevin Hart based on the 99% confidence intervals?
Calculate the size of the sample that would have to be collected to meet the conditions specified in Parts a and b below.a. A polling firm wants a margin of error of 3 percentage points for a 90%confidence interval estimating the percentage of people who plan to vote for a statewide ballot
The Pew Research Center posted an article on its website called “When Writing about Survey Data, 51% Might Not Mean a Majority.” Use the logic of confidence intervals to explain why this title is true.
According to the Merriam-Webster dictionary, one definition of the word “confidence”is “the quality or state of being certain.” A statistician looks at this definition and suggests that “confidence intervals” should be renamed “probability intervals.” Explain why she has made this
Use the “One Sample T Test” dialog box to run the hypothesis test examining whether attitudes about science and technology for all people in China are the same as attitudes for people around the world.
Find the sample mean for Chinese respondents in the output.
What is the null hypothesis? What is the two-tailed alternative hypothesis?
What is the sample t-value?
Interpret the output for the two-tailed test. Does the evidence suggest that residents of China feel the same as the rest of the world about science and technology?
Use the “ttest” command to run the hypothesis test examining whether attitudes about science and technology for all people in China are the same as attitudes for people around the world.
Find the sample mean for Chinese respondents in the output.
What is the null hypothesis? What is the two-tailed alternative hypothesis?
What is the sample t-value?
Interpret the output for the two-tailed test. Does the evidence suggest that residents of China feel the same as the rest of the world about science and technology?
Prior to 2000, the U.S. Census did not allow people to choose more than one racial identity. Since 2000, people have been able to mark more than one box on the Census question about race. Since then, demographers have used Census data to study the multiracial population, as measured by people who
Continuing with the example given in Problem 1, conduct a hypothesis test for proportions to assess whether the percentage of people identifying as multiracial in the West is equal to the overall population rate. Be sure to specify an alpha-level.
Researchers find that a preventative health care program implemented in Anytown reduces emergency room visits to a mean of .50 per household per year. You sample 105 low-income households in Anytown and find that their mean number of visits to an emergency room in the past year was .65, with a
A researcher in California is investigating how gender is related to school discipline.She is studying a random sample of 500 students from a large high school in California with more than 5,000 students. In her sample, 83% of the students who have been suspended from school are boys. This is
Virtually all politicians now use social media as a way of communicating with voters, and increasing numbers of people use social media as a way to engage in politics. A random sample of 300 social media users scores a mean of 6 on a political engagement scale that ranges from not at all

Showing 5300 - 5400 of 6202

First
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
Last

Statistics For Social Understanding With Stata And SPSS 2nd Edition Nancy Whittier , Tina Wildhagen , Howard Gold - Solutions

Step by Step Answers