Question

A simple random sample of ten college freshmen were asked how many hours of sleep they...

A simple random sample of ten college freshmen were asked how many hours of sleep they typically got per night. The results were

8.5
9.5
8
6.5
7.5
9
6
24
8.5
9.5

Notice that one joker said that he sleeps 24 hours a day.

99% confidence interval for the mean amount of sleep from the remaining values 6.72

Leave the outlier in and construct the 99% confidence interval. Round the answers to two decimal places.

If the outlier is included the 99% confidence interval is _____

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

Homework Answers

Answer #1

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
Sleeping outlier: A simple random sample of nine college freshmen were asked how many hours of...
Sleeping outlier: A simple random sample of nine college freshmen were asked how many hours of sleep they typically got per night. The results were 8.5 24 9 8.5 8 6.5 6 7.5 9.5 Notice that one joker said that he sleeps 24 a day. (a) The data contain an outlier that is clearly a mistake. Eliminate the outlier, then construct a 99.9% confidence interval for the mean amount of sleep from the remaining values. Round the answers to at...
Sleeping outlier: A simple random sample of eight college freshmen were asked how many hours of...
Sleeping outlier: A simple random sample of eight college freshmen were asked how many hours of sleep they typically got per night. The results were: 8.5 7.5 6.5 9 24 6 8.5 8 Notice that one joker said that he sleeps 24 hours a day. The data contain an outlier that is clearly a mistake. Eliminate the outlier, then construct a confidence interval for the mean amount of sleep from the remaining values. Round the answers to two decimal places....
. At a local university, the professor of sleep would like to know the mean time...
. At a local university, the professor of sleep would like to know the mean time a college student sleeps per nite. Ten randomly selected students were asked how long they slept at night. The mean time they slept was 7.1 hours, and the standard deviation was 0.78 hour. a) Find the best point estimate for the true mean time: ______________ b) Find the 95% confidence interval for the population mean: ______________________ c) A second professor believes that the mean...
In order to determine how many hours per week freshmen college students watch television, a random...
In order to determine how many hours per week freshmen college students watch television, a random sample of 25 students was selected. It was determined that the students in the sample spent an average of 19.5 hours with a sample standard deviation of 3.9 hours watching TV per week. Please answer the following questions: (a) Provide a 95% confidence interval estimate for the average number of hours that all college freshmen spend watching TV per week. (b) Assume that a...
1. A sample of 61 students at a university were asked how many hours of sleep...
1. A sample of 61 students at a university were asked how many hours of sleep they get on weeknights. The sample had a mean of 6.2 hours and a standard deviation of 0.7 hours. a. Use your calculator to construct a 95% confidence interval estimate for the mean reported weeknight sleep time among students at that university. Write a statement (we are...) that interprets your answer.
A group of 463 first-year college students were asked, “About how many hours do you study...
A group of 463 first-year college students were asked, “About how many hours do you study during a typical week?” The mean response is 15.3 hours. Assume that the study time is normally distributed with a sample standard deviation of 8.5 hours. Construct a 99% confidence level interval for the mean study time of all first-year students.
How much sleep do you get on a typical school night? A group of 10 college...
How much sleep do you get on a typical school night? A group of 10 college students were asked to report the number of hours that they slept on the previous night with the following results. 7.25, 6.25, 7.5, 7.25, 8.75, 4.75, 8.25, 7.25, 7, 6.25 (a) Find a 99% confidence interval for the average number of hours that college students sleep. _________ to __________ (b) What assumptions are required in order for this confidence interval to be valid? (Select...
A class survey in a large class for first-year college students asked, "About how many hours...
A class survey in a large class for first-year college students asked, "About how many hours do you study during a typical week?" There were 464 responses to the class survey. Suppose that we know that the study time follows a Normal distribution with standard deviation σ = 8.6 hours in the population of all first-year students at this university. One student claimed to study 10,000 hours per week (10,000 is more than the number of hours in a year)....
6) A random sample of high school girls were asked how many hours per week they...
6) A random sample of high school girls were asked how many hours per week they use social media. The sample mean of the 25 girls was 9 with standard deviation 2.7. What is the 90% confidence interval for the true mean for the hours per week high school girls use social media? Assume the population is normally distributed.
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT