Question

A random sample of 45 Hollywood movies made since the year 2000 has a mean length...

A random sample of 45 Hollywood movies made since the year 2000 has a mean length of 111.7 minutes. If it is known that the population standard deviation of Hollywood movie times is 13. 8 minutes, construct a 95% confidence interval for the mean length of all Hollywood movies made since the year 2000.

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

Homework Answers

Answer #1

Let denotes the mean length of all Hollywood movies made since the year 2000.

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
A random sample of 32 Hollywood movies made since the year 2000 had a mean length...
A random sample of 32 Hollywood movies made since the year 2000 had a mean length of 111.7 minutes with a standard deviation of 13.8 minutes. Construct a 95% confidence interval for the true mean length of all Hollywood movies made since 2000.
A random sample of 35 Hollywood movies made since the year 2010 had a mean length...
A random sample of 35 Hollywood movies made since the year 2010 had a mean length of 121.6 minutes, with a sample standard deviation of 20.4 minutes. (a) (10 points) Construct a 95% confidence interval for the true mean length of all Hollywood movies made since 2010. Here are some questions to consider. You must show all your work to receive full credit. i. Which standard deviation are you given?, What is the error formula?, How do we compute the...
A random sample of 46 Foreign Language movies made since 2000 had a mean length of...
A random sample of 46 Foreign Language movies made since 2000 had a mean length of 130.9 minutes, with a standard deviation of 12.7 minutes. Part 1 of 2 Construct a 99.8% confidence interval for the true mean length of all Foreign Language movies made since 2000. Round the answers to one decimal place. 2. A college admissions officer takes a simple random sample of 100 entering freshmen and computes their mean mathematics SAT score to be 463. Assume the...
A random sample of 43 Foreign Language movies made since 2000 had a mean length of...
A random sample of 43 Foreign Language movies made since 2000 had a mean length of 130.1 minutes, with a standard deviation of 12.1 minutes. A)Construct a 98%  confidence interval for the true mean length of all Foreign Language movies made since 2000. Round the answers to one decimal place. A 98% confidence interval for the true meaning length of all Foreign language movies made since 2000 is B) As of november 2013, three spider man movies have been released, and...
A random sample of 13 DVD movies had a mean length of 114.9 minutes, with a...
A random sample of 13 DVD movies had a mean length of 114.9 minutes, with a standard deviation of 72.8 minutes. Find the lower bound of the 90% confidence interval for the true mean length of all Hollywood movies. Assume movie lengths to be approximately normally distributed. Round to one decimal place.
Question 6 A random sample of 13 DVD movies had a mean length of 115.1 minutes,...
Question 6 A random sample of 13 DVD movies had a mean length of 115.1 minutes, with a standard deviation of 64.7 minutes. Find the lower bound of the 90% confidence interval for the true mean length of all Hollywood movies. Assume movie lengths to be approximately normally distributed. Round to one decimal place (for example: 108.1). Write only a number as your answer. Do not write any units. Question 7 Six measurements were made of the mineral content (in...
In a random sample of 8 ​people, the mean commute time to work was 35.5 minutes...
In a random sample of 8 ​people, the mean commute time to work was 35.5 minutes and the standard deviation was 7.2 minutes. A 95​% confidence interval using the​ t-distribution was calculated to be left parenthesis 29.5 comma 41.5 right parenthesis. After researching commute times to​ work, it was found that the population standard deviation is 9.2 minutes. Find the margin of error and construct a 95​% confidence interval using the standard normal distribution with the appropriate calculations for a...
A simple random sample is drawn from a population for estimating the mean of the population....
A simple random sample is drawn from a population for estimating the mean of the population. The mean from the sample is 25.6 and the sample size is 60.\ 1. If the population standard deviation is known to be 10.5, construct a 95% confidence interval for the population mean. 2. If the population standard deviation is not known but the sample standard deviation is calculated to be 11.5, construct a 95% confidence interval for the population mean. 3. Do we...
in a random sample of 8 people the mean commute time to work was 34.5 minutes...
in a random sample of 8 people the mean commute time to work was 34.5 minutes and the standard deviation was 7.2 minutes. A 90% confidence interval using the t distribution was calculated to be (29.7, 39.3). After researching commute times to work, it was found that the population standard deviation is 9.2 minutes. Find the margin of error and construct a 90% confidence interval using the standard normal distribution with the appropriate calculations for a standard deviation that is...
*Please Answer All * 1. A company has developed a new type of light bulb and...
*Please Answer All * 1. A company has developed a new type of light bulb and wants to estimate its mean lifetime. A simple random sample of 12 bulbs had a sample mean lifetime of 651 hours with a sample standard deviation of 31 hours. It is reasonable to believe that the population is approximately normal. Find the lower bound of the 95% confidence interval for the population mean lifetime of all bulbs manufactured by this new process. Round to...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT