Homework Answers
Add Answer to:
Take this test as you would take a test in class. 1. In a survey of...
In a survey of 2096 US adults, 1740 think football teams of all levels should require...
In a survey of 2096 US adults, 1740 think football teams of all levels should require players who suffer a head injury to take a set amount of time off from playing to recover. Find the 99% confidence interval for the population proportion. Select the correct answer below: 0.8302 (0.81408, 0.84623) (0.80903, 0.85128)
There are many reasons adults use credit cards. A recent survey found that 75% of adults...
There are many reasons adults use credit cards. A recent survey found that 75% of adults used credit cards for convenience. a. To conduct a follow-up study that would provide 99% confidence that the point estimate is correct to within t0.03 of the population proportion, how many people need to be sampled? b. To conduct a follow-up study that would provide 99% confidence that the point estimate is correct to within t0.06 of the population proportion, how many people need...
Question 1 (5 points) In a survey of 3224 U.S. adults, 1490 said flying is the...
Question 1 (5 points) In a survey of 3224 U.S. adults, 1490 said flying is the most stressful form of travel. Answer the following questions: 1) Find a point estimate of the population proportion(P)? 2) What is the "Critical Value of a 99% confidence interval for the population proportion? 3) What is the "Margin of Error" of a 99% confidence interval for the population proportion? 4) Find a 99% confidence interval for the population proportion? You should enter your answer...
Need help with 3C. Thank you! In a survey of 990 Canadian adults, 790 say that...
Need help with 3C. Thank you!
In a survey of 990 Canadian adults, 790 say that the energy situation in Canada is very or fairly serious. 1. Find the point estimate for the population proportion. 0.7980 You are correct. Previous Tries Your receipt no. is 168-9466 2. Construct a 95% confidence interval for the population proportion. (a) The critical value: 1.9600 You are correct. Your receipt no. is 168-1602 Previous Tries (b) The margin of error: 0.0250 You are correct....
1. Given n=2500 and p=0.86, find the margin of error E that corresponds to a 99%...
1. Given n=2500 and p=0.86, find the margin of error E that
corresponds to a 99% confidence level
2. you are given a margin of error as three percentage points
in a confidence level of 99%. If the same percentage from arecent
poll is 35%, find the minimum sample size to estimate a population
proportion.
corresponds to a 99% confidence (1 point) 1. Given n level. 2500 and β-086, find the margin of error E that 0.014 0.048 0.018 0...
6. How many randomly selected adults must be surveyed to estimate the percentage of adults in...
6. How many randomly selected adults must be surveyed to estimate the percentage of adults in ( point) the country who now use the Internet? Assume that you want to be 99% confident that the sample percentage is within 2 percentage points of the true population percentage and that you know nothing about the percentage of adults using the Internet. 16,577 O 4,145 O 2,401 O 613 (l point 7-A recent poll of 1800 people showed that 35% believe gas...
A recent General Social Survey asked, "During the last year, did anyone take something from you...
A recent General Social Survey asked, "During the last year, did anyone take something from you by using force-such as a stickup, mugging, or threat?" of 970 subjects, 25 answered yes and 945 answered no. (a) What is the statistic used to estimate the proportion of the population who were victims. (b) Find the standard error of this estimate. (3 decimal places) (c) Find the margin of error for a 99% confidence interval. (3 decimal places) d) Given the 99%...
3. An IQ test is designed so that the mean is 100 and the standard deviation is 19 for the population of adults. Find t...
3. An IQ test is designed so that the mean is 100 and the standard deviation is 19 for the population of adults. Find the sample size necessary to estimate the mean IQ score of nurses such that it can be said with 99 % confidence that the sample mean is within 5 IQ points of the true mean. Assume that o = 19 and determine the required sample size using technology. The required sample size is _ (Round up...
5. A manufacturing company produces electric insulators. To test the strength of the insulators, you apply a force...
5. A manufacturing company produces electric insulators. To test the strength of the insulators, you apply a force to an insulator until it breaks. You measure the force by observing! how many pounds are required to break the insulator. You collect the force data for a random sample of 30 insulators selected for this experiment. The data is in the Excel file for this assignment in the tab Force. a. Construct a 95% confidence interval estimate for the population mean...
ame: A survey conducted by Sallie Mae and Gallup of 1404 respondents found that 323 students...
ame: A survey conducted by Sallie Mae and Gallup of 1404 respondents found that 323 students paid for their education by student loans. Find the 90% confidence of the true proportion of students who paid for their education by student loans. A survey of 1898 people found that 45% of the adults said that dandelions were the toughest weeds to control in their yards. Find the 95% confidence interval of the true proportion who said that dandelions were the toughest...
In a survey of 2096 US adults, 1740 think football teams of all levels should require players who suffer a head injury to take a set amount of time off from playing to recover. Find the 99% confidence interval for the population proportion. Select the correct answer below: 0.8302 (0.81408, 0.84623) (0.80903, 0.85128)
There are many reasons adults use credit cards. A recent survey found that 75% of adults used credit cards for convenience. a. To conduct a follow-up study that would provide 99% confidence that the point estimate is correct to within t0.03 of the population proportion, how many people need to be sampled? b. To conduct a follow-up study that would provide 99% confidence that the point estimate is correct to within t0.06 of the population proportion, how many people need...
Question 1 (5 points) In a survey of 3224 U.S. adults, 1490 said flying is the most stressful form of travel. Answer the following questions: 1) Find a point estimate of the population proportion(P)? 2) What is the "Critical Value of a 99% confidence interval for the population proportion? 3) What is the "Margin of Error" of a 99% confidence interval for the population proportion? 4) Find a 99% confidence interval for the population proportion? You should enter your answer...
Need help with 3C. Thank you!
In a survey of 990 Canadian adults, 790 say that the energy situation in Canada is very or fairly serious. 1. Find the point estimate for the population proportion. 0.7980 You are correct. Previous Tries Your receipt no. is 168-9466 2. Construct a 95% confidence interval for the population proportion. (a) The critical value: 1.9600 You are correct. Your receipt no. is 168-1602 Previous Tries (b) The margin of error: 0.0250 You are correct....
1. Given n=2500 and p=0.86, find the margin of error E that
corresponds to a 99% confidence level
2. you are given a margin of error as three percentage points
in a confidence level of 99%. If the same percentage from arecent
poll is 35%, find the minimum sample size to estimate a population
proportion.
corresponds to a 99% confidence (1 point) 1. Given n level. 2500 and β-086, find the margin of error E that 0.014 0.048 0.018 0...
6. How many randomly selected adults must be surveyed to estimate the percentage of adults in ( point) the country who now use the Internet? Assume that you want to be 99% confident that the sample percentage is within 2 percentage points of the true population percentage and that you know nothing about the percentage of adults using the Internet. 16,577 O 4,145 O 2,401 O 613 (l point 7-A recent poll of 1800 people showed that 35% believe gas...
A recent General Social Survey asked, "During the last year, did anyone take something from you by using force-such as a stickup, mugging, or threat?" of 970 subjects, 25 answered yes and 945 answered no. (a) What is the statistic used to estimate the proportion of the population who were victims. (b) Find the standard error of this estimate. (3 decimal places) (c) Find the margin of error for a 99% confidence interval. (3 decimal places) d) Given the 99%...
3. An IQ test is designed so that the mean is 100 and the standard deviation is 19 for the population of adults. Find the sample size necessary to estimate the mean IQ score of nurses such that it can be said with 99 % confidence that the sample mean is within 5 IQ points of the true mean. Assume that o = 19 and determine the required sample size using technology. The required sample size is _ (Round up...
5. A manufacturing company produces electric insulators. To test the strength of the insulators, you apply a force to an insulator until it breaks. You measure the force by observing! how many pounds are required to break the insulator. You collect the force data for a random sample of 30 insulators selected for this experiment. The data is in the Excel file for this assignment in the tab Force. a. Construct a 95% confidence interval estimate for the population mean...
ame: A survey conducted by Sallie Mae and Gallup of 1404 respondents found that 323 students paid for their education by student loans. Find the 90% confidence of the true proportion of students who paid for their education by student loans. A survey of 1898 people found that 45% of the adults said that dandelions were the toughest weeds to control in their yards. Find the 95% confidence interval of the true proportion who said that dandelions were the toughest...
Most questions answered within 3 hours.
-
I create an address book where the user enters the name, phone
and email in the...
asked 2 minutes ago -
The production capacity for acrylonitrile
(C3H3N) in the United States exceeds 2
million pounds per year....
asked 10 minutes ago -
explain and comment out your answer
43. How many address lines are required to address a...
asked 16 minutes ago -
A sample of 45 observations is selected from a normal
population. The sample mean is 49,...
asked 31 minutes ago -
A construction company is planning to bid on a building
contract. The bid costs the company...
asked 29 minutes ago -
A firm operating in a purely competitive environment is faced
with a market price of $250....
asked 35 minutes ago -
•Let’s say someone claims the average population size is
600 feet squared and the housing authority...
asked 43 minutes ago -
Cynaide is a deadly poison that blocks the last step in the
electron transport chain of...
asked 47 minutes ago -
Your friend tells you that there is a vending machine on campus
that dispenses M&M packs...
asked 1 hour ago -
What advantages are there to using piperidine rather than
hydroxide as a base?
asked 1 hour ago -
7. The life of a Freeze Breeze electric fan is normally
distributed with a mean 4...
asked 1 hour ago -
1. A 751 mL NaCl solution is diluted to a volume of 1.06 L and a...
asked 1 hour ago