Question

You are conducting research on the prevalence of severe binge drinking among college students. You define...

You are conducting research on the prevalence of severe binge drinking among college students. You define severe binge drinking as consuming 5 or more alcoholic beverages at a single sitting. You ask the question: “On how many days in the past two weeks have you consumed 5 or more drinks at one time? The answers can range from 0 to 14. You collect data on a random sample of 400 students.

The average for this sample in 1.42 with a standard deviation of .80. Construct a 95% confidence interval for the average binge drinking score in the population.

Another student who reviewed your figures, says your math is correct, but using the normal distribution isn’t correct because the binge drinking scores are highly skewed, with some students binging very frequently, and the majority of students never binge drinking at all. Is she correct that it is inappropriate to calculate a confidence interval for this research question?

Math   Statistics-And-Probability   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

Since sample size is large enough ( > 30), using Central limit theorem, we can approximate sampling distribution of sample mean by normal distribution.

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
The National Safe Driving Association has just hired you to conduct research on the prevalence of...
The National Safe Driving Association has just hired you to conduct research on the prevalence of severe binge drinking among teens. You have created a scale ranging from 0 to 14 measuring the number of times teens drank 10 or more alcoholic beverages in a single sitting in the past 2 weeks. The average severe binge drinking score for your sample of 100 teens is 1.27, with a standard deviation of 0.80. What is the research variable being studied? Level...
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...
4. You have been hired to do research on the prevalence of marijuana use among U.S....
4. You have been hired to do research on the prevalence of marijuana use among U.S. teenagers. You have decided to use the 2018 Monitoring the Future data that has a scale (from 0-14) measuring the number of days in the past two weeks that teens used marijuana. According to the data, this sample of 945 teens’ average marijuana use was 1.22 days per two weeks, with a standard deviation of .76. (worth 16 points total) A. Construct the 99%...
5. How heavy are the backpacks carried by college students? To estimate the weight of backpacks...
5. How heavy are the backpacks carried by college students? To estimate the weight of backpacks carried by college students, a researcher weighs the backpacks from a random sample of 58 college students. The average backpack weight ends up being 15.7 pounds, with a standard deviation of 2.4 pounds. If you use this data to construct a 90% confidence interval, what will the margin of error be for this interval? Try not to do a lot of intermediate rounding until...
Some students have suggested that if you have to guess on a multiple-choice question, you should...
Some students have suggested that if you have to guess on a multiple-choice question, you should always choose C. Carl, the student, wants to investigate this theory. He is able to get a sample of past tests and quizzes from various teachers. In this sample there are 80 multiple-choice questions with four options (A, B, C, D). The distribution of correct answers from this sample is given in the frequency table below. Correct Answer Frequency A 14 B 18 C...
Multiple Choice Strategy: Some students have suggested that if you have to guess on a multiple-choice...
Multiple Choice Strategy: Some students have suggested that if you have to guess on a multiple-choice question, you should always choose C. Carl, the student, wants to investigate this theory. He is able to get a sample of past tests and quizzes from various teachers. In this sample there are 90 multiple-choice questions with four options (A, B, C, D). The distribution of correct answers from this sample is given in the frequency table below. Correct Answer Frequency A 17...
Multiple Choice Strategy: Some students have suggested that if you have to guess on a multiple-choice...
Multiple Choice Strategy: Some students have suggested that if you have to guess on a multiple-choice question, you should always choose C. Carl, the student, wants to investigate this theory. He is able to get a sample of past tests and quizzes from various teachers. In this sample there are 90 multiple-choice questions with four options (A, B, C, D). The distribution of correct answers from this sample is given in the frequency table below. Correct Answer Frequency A 16...
Multiple Choice Strategy: Some students have suggested that if you have to guess on a multiple-choice...
Multiple Choice Strategy: Some students have suggested that if you have to guess on a multiple-choice question, you should always choose C. Carl, the student, wants to investigate this theory. He is able to get a sample of past tests and quizzes from various teachers. In this sample there are 110 multiple-choice questions with four options (A, B, C, D). The distribution of correct answers from this sample is given in the frequency table below. Correct Answer Frequency A 21...
Multiple Choice Strategy: Some students have suggested that if you have to guess on a multiple-choice...
Multiple Choice Strategy: Some students have suggested that if you have to guess on a multiple-choice question, you should always choose C. Carl, the student, wants to investigate this theory. He is able to get a sample of past tests and quizzes from various teachers. In this sample there are 90 multiple-choice questions with four options (A, B, C, D). The distribution of correct answers from this sample is given in the frequency table below. Correct Answer Frequency A 16...
What were the main findings of this research (i.e., did the analyses support or fail to...
What were the main findings of this research (i.e., did the analyses support or fail to support the researchers’ hypotheses?). (The answer to this question can be found by reading the “Discussion” section of the article, especially the first few paragraphs). and this is the Discussion : Today’s students are quite different than those who populated university classrooms at the turn of the century. Raised in the internet age, constantly “plugged in”, seemingly inextricably attached to cell phones, and facile...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT