Question

a researcher wishes to estimate the proportion of adults in the city of Darby who are...

a researcher wishes to estimate the proportion of adults in the city of Darby who are vegetarian. in a random sample of 1729 adults from the city's proportion that are vegetarian is 0.083. find a 95% confidence interval for the proportion of all adults in the city of Darby that are vegetarians.

Homework Answers

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
Use the one-proportion z-interval procedure to find the required confidence interval. A researcher wishes to estimate...
Use the one-proportion z-interval procedure to find the required confidence interval. A researcher wishes to estimate the proportion of adults in the city of Darby who are vegetarian. In a random sample of 1323 adults from this city, the proportion that are vegetarian is 0.068. Find a 90% confidence interval for the proportion of all adults in the city of Darby that are vegetarians.
A researcher wishes to​ estimate, with 95​% ​confidence, the population proportion of adults who are confident...
A researcher wishes to​ estimate, with 95​% ​confidence, the population proportion of adults who are confident with their​ country's banking system. His estimate must be accurate within 4​% of the population proportion. ​(a) No preliminary estimate is available. Find the minimum sample size needed. ​(b) Find the minimum sample size​ needed, using a prior study that found that 28​% of the respondents said they are confident with their​ country's banking system. ​(c) Compare the results from parts ​(a) and ​(b).
A researcher wishes to​ estimate, with 95​% ​confidence, the population proportion of adults who think the...
A researcher wishes to​ estimate, with 95​% ​confidence, the population proportion of adults who think the president of their country can control the price of gasoline. Her estimate must be accurate within 5​% of the true proportion. ​a) No preliminary estimate is available. Find the minimum sample size needed. ​b) Find the minimum sample size​ needed, using a prior study that found that 22​% of the respondents said they think their president can control the price of gasoline. ​c) Compare...
A researcher wishes to​ estimate, with 95% ​confidence, the population proportion of adults who think Congress...
A researcher wishes to​ estimate, with 95% ​confidence, the population proportion of adults who think Congress is doing a good or excellent job. Her estimate must be accurate within 3% of the true proportion. ​(a) No preliminary estimate is available. Find the minimum sample size needed. ​(b) Find the minimum sample size​ needed, using a prior study that found that 36​% of the respondents said they think Congress is doing a good or excellent job. ​(c) Compare the results from...
A researcher wishes to​ estimate, with 95​% ​confidence, the population proportion of adults who eat fast...
A researcher wishes to​ estimate, with 95​% ​confidence, the population proportion of adults who eat fast food four to six times per week. Her estimate must be accurate within 5​% of the population proportion. ​(a) No preliminary estimate is available. Find the minimum sample size needed. ​(b) Find the minimum sample size​ needed, using a prior study that found that 20​% of the respondents said they eat fast food four to six times per week. ​(c) Compare the results from...
A researcher wishes to estimate the proportion of adults who have​ high-speed Internet access. What size...
A researcher wishes to estimate the proportion of adults who have​ high-speed Internet access. What size sample should be obtained if she wishes the estimate to be within 0.01 with 95​% confidence if ​(a) she uses a previous estimate of 0.34​? ​(b) she does not use any prior​ estimates?
A researcher wishes to estimate the proportion of adults who have​ high-speed Internet access. What size...
A researcher wishes to estimate the proportion of adults who have​ high-speed Internet access. What size sample should be obtained if she wishes the estimate to be within 0.04 with 95​% confidence if ​(a) she uses a previous estimate of 0.54​? ​(b) she does not use any prior​ estimates?
A researcher wishes to estimate the proportion of all adults who own a cell phone. He...
A researcher wishes to estimate the proportion of all adults who own a cell phone. He takes a random sample of 2000 adults; 1650 of them own a cell phone. The population of interest to the research is: A. the total 2000 adults surveyed B. The 1650 adults who own a cell phone C. All adults D. All adults who own a cell phone
A researcher wishes to​ estimate, with 99​% ​confidence, the population proportion of adults who are confident...
A researcher wishes to​ estimate, with 99​% ​confidence, the population proportion of adults who are confident with their​ country's banking system. His estimate must be accurate within 3​% of the population proportion. ​(a) No preliminary estimate is available. Find the minimum sample size needed. ​(b) Find the minimum sample size​ needed, using a prior study that found that 26​% of the respondents said they are confident with their​ country's banking system. ​(c) Compare the results from parts ​(a) and ​(b).
A researcher wishes to​ estimate, with 99​% ​confidence, the population proportion of adults who think the...
A researcher wishes to​ estimate, with 99​% ​confidence, the population proportion of adults who think the president of their country can control the price of gasoline. Her estimate must be accurate within 2​% of the true proportion. ​a) No preliminary estimate is available. Find the minimum sample size needed. ​b) Find the minimum sample size​ needed, using a prior study that found that 38​% of the respondents said they think their president can control the price of gasoline. ​c) Compare...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT