Question

3. In town A, a survey of 54 families finds a mean household size of 2.13,...

3. In town A, a survey of 54 families finds a mean household size of 2.13, with a standard deviation of 1.0. In town B, a survey of 65 families finds a mean household size of 2.39, with a standard deviation of 1.2. Find an 86% confidence interval around the difference in means

Thank you!

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
    You conduct a survey to measure the mean household income for the city of Hays,...
    You conduct a survey to measure the mean household income for the city of Hays, Kansas. You survey 500 random residents and ask them to report their total household income for 2008. In analyzing the data, you find that the mean annual household income for the sample was $47,300. The standard deviation of this distribution is $9500. What is the 95% confidence interval for the mean annual household income of all residents of Hays?         $42,578 to $52,377    ...
A survey is conducted with 25 families on the grocery budget of families and it’s determined...
A survey is conducted with 25 families on the grocery budget of families and it’s determined the mean budget is 452$ with a standard deviation of 95$. a) Find a 95% confidence interval of grocery budgets. b) Find a 99% confidence interval of grocery budgets. c) Which interval is larger? Why is that?
A survey of 100 randomly selected Michigan residents finds that the they spend a mean of...
A survey of 100 randomly selected Michigan residents finds that the they spend a mean of $21 per month on going to the movies. An independent study of a 100 randomly selected California residents find that they spend a mean of $46 per month on going to the movies. Assume that the population standard deviation for the Michigan residents is $5 per month and that the population standard deviation for the California residents is $23 per month. Answer the following...
A survey of 87 randomly selected homeowners finds that they spend a mean of $65 per...
A survey of 87 randomly selected homeowners finds that they spend a mean of $65 per month on home maintenance. Assume that the population standard deviation is $13 per month. Construct and interpret a 97% confidence interval for the mean amount of money spent per month on home maintenance by all homeowners.
Household weekly spending at Aldi data collected from 20 families in Sydney had the sample mean...
Household weekly spending at Aldi data collected from 20 families in Sydney had the sample mean $160 with a sample standard deviation of $15. Calculate 90% confidence interval for μ. Show your workings or provide Excel functions you have used for calculation.
A survey is conducted to estimate the average household income in a large metropolitan area. A...
A survey is conducted to estimate the average household income in a large metropolitan area. A random sample of 150 households in this area yielded an average household income of $55,000 with a standard deviation of $13,200. (a) Construct a 95% confidence interval for the mean household income in this area. (Choose the BEST answer) (b) All other information remaining unchanged, which of the following would produce a wider interval than the 95% confidence interval constructed above from Problem (a)?...
A survey of 100 randomly selected Michigan homeowners finds that they spend a mean of $67...
A survey of 100 randomly selected Michigan homeowners finds that they spend a mean of $67 per month on home maintenance. In an independent survey, 100 randomly selected Florida homeowners find that they spend a mean of $75 per month on home maintenance. Construct a 99% confidence interval for the true difference in the mean amounts of money spent per month on home maintenance for the two states. Assume that the population standard deviation is $14 per month for Michigan...
The water works commission needs to know the mean household usage of water by the residents...
The water works commission needs to know the mean household usage of water by the residents of a small town in gallons per day. Assume that the population standard deviation is 2.3 gallons. The mean water usage per family was found to be 16.7 gallons per day for a sample of 784 families. Construct the 95% confidence interval for the mean usage of water. Round your answers to one decimal place.
The water works commission needs to know the mean household usage of water by the residents...
The water works commission needs to know the mean household usage of water by the residents of a small town in gallons per day. Assume that the population standard deviation is 2.4 gallons. The mean water usage per family was found to be 19.5 gallons per day for a sample of 3034 families. Construct the 98% confidence interval for the mean usage of water. Round your answers to one decimal place.
The water works commission needs to know the mean household usage of water by the residents...
The water works commission needs to know the mean household usage of water by the residents of a small town in gallons per day. Assume that the population standard deviation is 2.3 gallons. The mean water usage per family was found to be 16.7 gallons per day for a sample of 784 families. Construct the 95% confidence interval for the mean usage of water. Round your answers to one decimal place. Lower endpoint: Upper endpoint:
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT