Question

In: Statistics and Probability

Suppose we conduct a study with 100 participants to estimate how many hours students sleep and...

Suppose we conduct a study with 100 participants to estimate how many hours students sleep and find an average of 8 and a confidence interval that ranges from 5 to 11. What is the margin of error?

Solutions

Expert Solution

The margin of error

= Width of confidence interval /2

= (Upper limit of confidence interval - Lower limit of confidence interval) /2

= (11 - 5) /2

= 3


Related Solutions

Sleep – College Students: Suppose you perform a study about the hours of sleep that college...
Sleep – College Students: Suppose you perform a study about the hours of sleep that college students get. You know that for all people, the average is about 7 hours. You randomly select 50 college students and survey them on their sleep habits. From this sample, the mean number of hours of sleep is found to be 6.2 hours with a standard deviation of 0.86hours. We want to construct a 95% confidence interval for the mean nightly hours of sleep...
Sleep – College Students: Suppose you perform a study about the hours of sleep that college...
Sleep – College Students: Suppose you perform a study about the hours of sleep that college students get. You know that for all people, the average is 7.0 hours with a standard deviation of 1.3 hours. You randomly select 50 college students and survey them on their sleep habits. From this sample, the mean number of hours of sleep is found to be 6.40 hours. Assume the population standard deviation for college students is the same as for all people....
Sleep – College Students: Suppose you perform a study about the hours of sleep that college...
Sleep – College Students: Suppose you perform a study about the hours of sleep that college students get. You know that for all people, the average is about 7 hours. You randomly select 45 college students and survey them on their sleep habits. From this sample, the mean number of hours of sleep is found to be 6.2 hours with a standard deviation of 0.97 hours. We want to construct a 95% confidence interval for the mean nightly hours of...
Sleep – College Students: Suppose you perform a study about the hours of sleep that college...
Sleep – College Students: Suppose you perform a study about the hours of sleep that college students get. You know that for all people, the average is about 7 hours. You randomly select 35 college students and survey them on their sleep habits. From this sample, the mean number of hours of sleep is found to be 6.1 hours with a standard deviation of 0.97 hours. You want to construct a 99% confidence interval for the mean nightly hours of...
Many people believe that students gain weight as freshmen. Suppose we plan to conduct a study...
Many people believe that students gain weight as freshmen. Suppose we plan to conduct a study to see if this is true. A) Describe a study design that would require a matched pairs t procedure to analyze the results B) Describe a study design that would require two sample t procedure to analyze the results
In a class survey, students are asked how many hours they sleep per night. In the...
In a class survey, students are asked how many hours they sleep per night. In the random sample of 18 students, the (sample) mean is 6.8 hours with a (sample) standard deviation of 1.9 hours. We wish to know if this shows that the class’s student population on average has not gotten at least the recommended 8 hours of sleep at the α = .1 level. The distribution of sleep for this population follows a normal distribution. c) Please use...
A. Suppose you want to study the number of hours of sleep full-time undergraduate students at...
A. Suppose you want to study the number of hours of sleep full-time undergraduate students at Belmont get each evening. To do so, you obtain a list of full-time undergraduate students at Belmont, obtain a simple random sample of ten students, and ask each of them to disclose how many hours of sleep they obtained the most recent Monday. What is the population of interest in this study? What is the sample? Explain why number of hours of sleep in...
A professor wants to estimate how many hours per week her students study. A simple random...
A professor wants to estimate how many hours per week her students study. A simple random sample of 78 students had a mean of 15.0 hours of studying per week. Assume that the POPULATION standard deviation is known to be 2.3 hours per week. a. Construct a​ 90% confidence interval for the mean number of hours a student studies per week. b. Interpret the confidence interval you found in part​ (a) in the SHOW YOUR WORK area. c. If Prof....
Sample 8 people and ask how many hours of sleep they got last night. Then conduct...
Sample 8 people and ask how many hours of sleep they got last night. Then conduct a hypothesis test if the mean hours of sleep last night is less than 8 hours. Use significance levels of ? = 0.05, 0.01, and 0.10. 1. List the data values, sample mean and sample standard deviation. 2. Conduct a Hypothesis Test including each of the four steps.
Students who get more sleep get better grades. You want to estimate the hours of sleep...
Students who get more sleep get better grades. You want to estimate the hours of sleep per night that a college student gets. You select 29 students; on average they slept 6.2 hours with a standard deviation of 1.8 hours. The standard error is 0.334. In order to be 90% confident of an estimate of the population mean, what is the margin of error? (Enter the value with three decimal places, using form #.###)
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT