Question
In: Statistics and Probability
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 #.###)
Solutions
orchestra answered 1 year agoRelated Solutions
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...
You are doing research on how much sleep students get who are in a Master's degree...
You are doing research on how much sleep students get who are in
a Master's degree program. You randomly select 300 students and
determine what the mean number of hours they slept was 5.5 hours,
with a standard deviation of .50 hours. What are the upper and
lower confidence limits at the 95 percent confidence level?
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...
The National Sleep Foundation (NSF) recommends that college students get between 8 and 9 hours of...
The National Sleep Foundation (NSF) recommends that college
students get between 8 and 9 hours of sleep per night. Not
believing this is happening at a local college, a random sample of
20 students resulted in a mean of 6.94 hours, with a standard
deviation of 1.1 hours.
Part 1 of 3
If it is assumed that hours of sleep for college students is
approximately normally distributed, construct and interpret a 95%
confidence interval statement as well as a confidence...
Wendy wants to estimate the mean number of hours that college students sleep each night. She...
Wendy wants to estimate the mean number of hours that college
students sleep each night. She obtains a simple random sample of 41
college students and finds that the sample mean is 6.7 with a
standard deviation of 1.9. Construct a 90% confidence interval to
estimate the population mean and interpret your answer in a
complete sentence (round numbers to 1 decimal place).
Wendy wants to estimate the mean number of hours that college students sleep each night. She...
Wendy wants to estimate the mean number of hours that college
students sleep each night. She obtains a simple random sample of 41
college students and finds that the sample mean is 6.7 with a
standard deviation of 1.9. Construct a 90% confidence interval to
estimate the population mean and interpret your answer in a
complete sentence (round numbers to 1 decimal place).
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?
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