Homework Answers
A. Including this question will result in both selection bias and response bias. The reasoning being that on one side a lot of people residing in the US wont answer (selection bais), those who do answer might lie (response bias).
B. Yes it will be biased. It will be biased because majority of immigrants are males and since they will refuse to answer the survey, the survey will show the share of women being higher than it actually is. We know that when mean is higher, it means the sample is skewed to the right.
C. Yes it will be biased. It will be biased because immigrants are highly democratic learning. Since they will refuse to answer, it will mean the share of democrats will come as lower than it actually is. Since the mean is lower, it means the sample is skewed to the left.
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1. The US Census wanted to add a question on respondent's citizenship to its survey. Individuals...
1. Short answer questions. a) You collect data on a random sample of individuals' years of...
1. Short answer questions. a) You collect data on a random sample of individuals' years of schooling and health. You regress health on schooling nd a positive coefficient. Can you conclude from this estimate that getting more education causes an increase in health (Yes or no)? Justify your answer. b) You have a cross-sectional dataset that includes individuals' education and wages. Explain what it means to have a "ceteris paribus" estimate of the effect of education on wages. c) You...
a) You collect data on a random sample of individuals’ years of schooling and health. You...
a) You collect data on a random sample of individuals’ years of schooling and health. You regress health on schooling and find a positive coefficient. Can you conclude from this estimate that getting more education causes an increase in health (Yes or no)? Justify your answer. b) You have a cross-sectional dataset that includes individuals’ education and wages. Explain what it means to have a “ceteris paribus” estimate of the effect of education on wages. c) You are interested in...
g through L filed by California and several other states, aiming to stop the curreem The Supreme Court just heard a case California a administration from including a question about citizenship o...
g
through L
filed by California and several other states, aiming to stop the curreem The Supreme Court just heard a case California a administration from including a question about citizenship on the 2 question worry that including it will cause many immigrants (who 2. 2020 census. Opponents of the citizenship may be worried about their status or wary of al) to not report or to under-report their presence. Because the census ers of congressional representatives a region gets, as...
We will use this prompt for this and the next 1 question. A survey reported in...
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In a survey of 500 likely voters, 271 responded that they would vote for the incumbent...
In a survey of 500 likely voters, 271 responded that they would vote for the incumbent and 229 responded that they would vote for the challenger. Let pp denote the fraction of all likely voters who preferred the incumbent at the time of the survey, and let p^p^ be the fraction of survey respondents who preferred the incumbent. a. Use the survey results to calculate p^p^. b. Test the hypothesis H0:p=0.5 vs. Ha:p≠0.5H0:p=0.5 vs. Ha:p≠0.5 at the 5% significance level....
For each question below select the best answer from those listed and give your reasoning. Your...
For each question below select the best answer from those listed and give your reasoning. Your reasoning need only be a sentence or two. It is not enough to get the right answer, you must know why it is the right answer. Question 5 Fred's friend claimed that Canadians tend to be jerks. Fred wondered if that was true, and tested it by checking to see how many Canadian jerks he could think of. Fred's cognitive strategy is ["the availability...
Statistical Literacy and Critical Thinking (when compared with the see survey). 1. Sampling Distribution. Pollsters often...
Statistical Literacy and Critical Thinking (when compared with the see survey). 1. Sampling Distribution. Pollsters often use randomly selected digits between 0 and 9 to generate parts of tele 6. Larger Sample Size. When a ran- phone numbers to be called. What is the distribution of such randomly selected digits? If we repeat the process ofs ulation mean, the sample mean tends to randomly generating 50 digits and finding the mean, what is the distribution of the resulting sample means?...
(18.02) A survey of licensed drivers inquired about running red lights. One question asked, "Of every...
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1. Conduct a test of the null hypothesis that the mean height for all students in...
1. Conduct a test of the null hypothesis that the mean height for all students in the Census at School database is equal to 155 cm vs the alternative that the mean Height is greater than 155 cm. Use a significance level of 0.05. a. State the null and alternative hypotheses. Ho: m = 155 Ha: m > 155 b. Provide the Statcrunch output table. Hypothesis test results: Variable Sample Mean Std. Err. DF T-Stat P-value Height 159.86 1.7311103 49...
Central Limit Theorem tell us about this value relative to the true mean net worth in...
Central Limit Theorem tell us about this value relative to the true mean net worth in the US population? 2. Hypothesis Testing You are interested in knowing whether the share of people who smoke is the same in California and Florida. You collect a random sample of 1,000 California residents and 900 Florida residents. You ask each of them whether they smoke or not and create a binary (dummy) variable smoke 1 if they say "Yes" and smoke 0 if...
1. Short answer questions. a) You collect data on a random sample of individuals' years of schooling and health. You regress health on schooling nd a positive coefficient. Can you conclude from this estimate that getting more education causes an increase in health (Yes or no)? Justify your answer. b) You have a cross-sectional dataset that includes individuals' education and wages. Explain what it means to have a "ceteris paribus" estimate of the effect of education on wages. c) You...
g
through L
filed by California and several other states, aiming to stop the curreem The Supreme Court just heard a case California a administration from including a question about citizenship on the 2 question worry that including it will cause many immigrants (who 2. 2020 census. Opponents of the citizenship may be worried about their status or wary of al) to not report or to under-report their presence. Because the census ers of congressional representatives a region gets, as...
Statistical Literacy and Critical Thinking (when compared with the see survey). 1. Sampling Distribution. Pollsters often use randomly selected digits between 0 and 9 to generate parts of tele 6. Larger Sample Size. When a ran- phone numbers to be called. What is the distribution of such randomly selected digits? If we repeat the process ofs ulation mean, the sample mean tends to randomly generating 50 digits and finding the mean, what is the distribution of the resulting sample means?...
Central Limit Theorem tell us about this value relative to the true mean net worth in the US population? 2. Hypothesis Testing You are interested in knowing whether the share of people who smoke is the same in California and Florida. You collect a random sample of 1,000 California residents and 900 Florida residents. You ask each of them whether they smoke or not and create a binary (dummy) variable smoke 1 if they say "Yes" and smoke 0 if...
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