Homework Answers
Answer:
a)
Population:
College student at U.S four-year college is correct answer
Sample:
17,096 students. is correct answer
b) Population:
All restaurant workers is correct answer
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For each of the following situations, describe the population and the sample. (a) A survey of...
Alcohol abuse has been described by college presidents as the number one problem on campus and...
Alcohol abuse has been described by college presidents as the number one problem on campus and is an important cause of death in young adults. A survey of 17,096 students in U.S. four-year colleges collected information on drinking behavior and alcohol-related problems. The researchers defined “frequent binge-drinking” as having five or more drinks in a row three or more times in the past two weeks. According to their definition 3,314 students were classified as frequent5 binge-drinkers. Construct a 901% confidence...
Construct a 901% confidence interval around the true proportion of binge-drinkers.
Alcohol abuse has been described by college presidents as the number one problem on campus and is an important cause of death in young adults. A survey of 17,096 students in U.S. four-year colleges collected information on drinking behavior and alcohol-related problems. The researchers defined “frequent binge-drinking” as having five or more drinks in a row three or more times in the past two weeks. According to their definition 3,314 students were classified as frequent5 binge-drinkers. Construct a 901% confidence...
Example: Alcohol abuse is a serious health problem on college campuses. A nationwide survey of student...
Example: Alcohol abuse is a serious health problem on college campuses. A nationwide survey of student at 140 four-year colleges in the U.S. defined "frequent binge drinking" as "having five or more drinks in a row three or more times in the past two week period." of the 17,096 students surveyed, 3,314 met this criterion. Assume the data represent a SRS of 4-year colleges (Wechsler. 1994; Moore & McCabe, 2006, p. 537). Calculate the prevalence of frequent binge drinking. Include...
Each year over 1,000 college students die in alcohol-related deaths, often in cases that involve binge...
Each year over 1,000 college students die in alcohol-related deaths, often in cases that involve binge drinking. Harvard School of Public Health reported in 2004 that 44% of college students are binge drinkers. In an informal anonymous survey conducted in a statistics class shortly after the Harvard report was released, students were asked: "In the past two weeks, have you had (males) more than five alcoholic drinks on one occasion? (females) more than four alcoholic drinks on one occasion?" [This...
1. When conducting a survey, it is important to use a random sample: to get a...
1. When conducting a survey, it is important to use a random sample: to get a significant result. to avoid bias and to get a representative sample. so that we can make causal conclusions. to ensure truthful answers to the survey's questions. none of the above. 2. In order to obtain a sample of undergraduate students in the United States, a simple random sample of 10 states is selected. From each of the selected states, 10 colleges or universities are...
15. A national survey by the National Institute for Occupational Safety and Health on restaurant employees...
15. A national survey by the National Institute for Occupational Safety and Health on restaurant employees found that 70% said that work stress had a negative impact on their personal lives. You investigate a restaurant chain to see if the proportion of all their employees negatively affected by work stress differs from the national proportion po = 0.65. In your SRS of 100 employees, you find that 70 answered "Yes" when asked, "Does work stress have a negative impact on...
A survey indicates that the vast majority of college students own their own personal computers. What...
A survey indicates that the vast majority of college students own their own personal computers. What information would you want to know before you accepted the results of this survey? Select all that apply. A. What was the sample size? B. Were the questions clear, accurate, unbiased, and valid? C. How many people conducted the survey? DD. Who funded the survey? E. What questions were asked? F. What are the names of the colleges included in the sample? G. What...
2. Suppose that a national survey finds that 73 percent of restaurant employees say that work...
2. Suppose that a national survey finds that 73 percent of restaurant employees say that work stress has a negative impact on their personal lives. A random sample of 200 employees of a large restaurant chain finds that 141 employees say that work stress has a negative impact on their personal lives. Conduct a hypothesis testing to test whether the percentage of work-stressed employees for the restaurant chain differs from the national percentage. Is this an one-sample or two-sample test?...
One population proportion test: Which of the following situations involves testing a claim about a single...
One population proportion test: Which of the following situations involves testing a claim about a single population proportion? According to the College Board, which administers the SAT exam, the average score for females is lower than for males among graduating seniors in 2011. An educational researcher wants to test whether this is also true in her school district. A recent study estimated that 20% o al college students in the United States smoke. The head of Health Services at Goodheart...
Determine what the key terms refer to in the following survey. To determine the average number...
Determine what the key terms refer to in the following survey. To determine the average number of classes Oxnard College students were taking, a group of 32 Oxnard College students were given and answered the following survey. How many classes you are taking this semester? 1 2 3 4 Statistic Sample Population Parameter The average number of classes of all students in Oxnard College is 2.8 All students in Oxnard College The average number of classes of those 32 students...
Example: Alcohol abuse is a serious health problem on college campuses. A nationwide survey of student at 140 four-year colleges in the U.S. defined "frequent binge drinking" as "having five or more drinks in a row three or more times in the past two week period." of the 17,096 students surveyed, 3,314 met this criterion. Assume the data represent a SRS of 4-year colleges (Wechsler. 1994; Moore & McCabe, 2006, p. 537). Calculate the prevalence of frequent binge drinking. Include...
15. A national survey by the National Institute for Occupational Safety and Health on restaurant employees found that 70% said that work stress had a negative impact on their personal lives. You investigate a restaurant chain to see if the proportion of all their employees negatively affected by work stress differs from the national proportion po = 0.65. In your SRS of 100 employees, you find that 70 answered "Yes" when asked, "Does work stress have a negative impact on...
A survey indicates that the vast majority of college students own their own personal computers. What information would you want to know before you accepted the results of this survey? Select all that apply. A. What was the sample size? B. Were the questions clear, accurate, unbiased, and valid? C. How many people conducted the survey? DD. Who funded the survey? E. What questions were asked? F. What are the names of the colleges included in the sample? G. What...
2. Suppose that a national survey finds that 73 percent of restaurant employees say that work stress has a negative impact on their personal lives. A random sample of 200 employees of a large restaurant chain finds that 141 employees say that work stress has a negative impact on their personal lives. Conduct a hypothesis testing to test whether the percentage of work-stressed employees for the restaurant chain differs from the national percentage. Is this an one-sample or two-sample test?...
One population proportion test: Which of the following situations involves testing a claim about a single population proportion? According to the College Board, which administers the SAT exam, the average score for females is lower than for males among graduating seniors in 2011. An educational researcher wants to test whether this is also true in her school district. A recent study estimated that 20% o al college students in the United States smoke. The head of Health Services at Goodheart...
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