What is the point estimate for the mean amount, Basic Statistics

Assignment Help:

1. What size sample will be needed to construct a 95% confidence interval on a ballot issue if the estimate must be 2% of the actual percent. This issue looks very close in the election.

2. A sample of 800 voters revealed that 52% of them would vote for a specific issue. Create and interpret a 95% confidence interval for the support of the issue. In the interpretation indicate what type of statement you can make about the issue passing. What is the error of the estimate for this problem? How could you decrease the size of the interval?

3. A student is trying to determine how much money a student in her
school spends when buying lunch in the cafeteria. She randomly selects 16 students who buy their lunch and records the amount that they spend. The following lists the results:

3.25 4.50 2.95 4.25 5.25 4.80 4.10 3.95
3.75 2.80 4.87 5.10 4.68 4.75 4.55 4.60

a. Construct a 95% confidence interval for the average amount spent on lunch.
b. What is the point estimate for the mean amount spent on lunch at this school?
c. What is the margin of error?
d. The school cafeteria claims that the average amount is $3.70. What comment can you make about this claim?

4. Bride's Magazine reported that the mean cost of a wedding is $19,000 with a standard deviation of $9400. If Bride's magazine wishes to construct a 95% interval estimate of the true mean cost, what is the recommended sample size if the margin of error is $1000?

5. The state department of agriculture is trying to determine the average corn yield for farmers in the state. They take a sample of 40 farmers and determine that the average yield was 151.2 bushels per acre. If the population standard deviation is 12.3 bushels per acre, create a 90% confidence interval for the mean yield in the state this season.

What is the margin of error? Create a 99% confidence interval for the mean yield per acre.


Related Discussions:- What is the point estimate for the mean amount

Functions , i need help it says for the tables of values determine appropri...

i need help it says for the tables of values determine appropriate veiwing window, create a scatter plot, write a function rule, and graph your funtion rule over your scatter plot

Corporate B onds/Preffered Stocks, What is the complete answer and files fo...

What is the complete answer and files for this document

Expansion 0f solid, state the advantage of expansion of solid

state the advantage of expansion of solid

Accounting for partnerships and limited liability companies, Singer & Mcman...

Singer & Mcmann are partners in business. Singer''s original capital was $40,000 and Mcmann''s was $60.000. They agree to salaries of $12,000 and $18,00 respectively and 10% inte

Explain what is signal reliability ration, A. If CD players are able to use...

A. If CD players are able to use the LDD strategy better than pure chance then explain what happens to the signal reliability ration as a CD player detects more cautiously B. As

Define why equipment show up on a profit and loss statement, Define why Equ...

Define why Equipment show up on a profit and loss statement? The buy of devices that will be used in a business is not revealed on the revenue and reduction declaration. Howeve

Absorption costing, how do i prepare an income statement for absorption cos...

how do i prepare an income statement for absorption costing?

Assignment, How much it will cost to get an assignment

How much it will cost to get an assignment

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd