Multiple choice question. Construct 99%confidence Interval. n= 14A sample of sizereasonable to assume that the population is approximately normal. Construct ainterval for the population mean u.has a sample meanx= 11.9and sample standard deviations = 2.1.It is99%confidenceO (10.4, 13.4)O (10.2, 13.6)O (10.7, 13.1)D(11.4, 12.4)Multiple choice question. Construct 99%confidence Interval.

Answered: Image /qna-images/answer/729aaf9e-7145-4d6a-a3fc-36f86c582bae.jpg

Answered: A sample of size n= 14 has a sample…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Question Heip People were surveyed worldwide, being asked the question "How important is acquiring wealth to you?" Of 1516 respondents in country A, 1164 said that it was of more than average importance. In country B, of 1325 respondents, 610 said it was of more than average importance. a) What proportion thought acquiring wealth was of more than average importance b) Create a 99% confidence interval for the percentage of people who thought it was of more than average importance in country A. (Be sure to test conditions.) Compare that to a confidence interval for the country B population. each country's sample? a) The sample proportions are 0.768 for country A and 0.460 for country B. (Round to three decimal places as needed.) b) What is the confidence interval for country A? Select the correct choice below and, if necessary, fill in the answer boxes within your choice. O A. The 99% confidence interval for country A is ((76.8 %, 46.0 %) (Round to one decimal place as needed.) O B. The…
A political candidate has asked you to conduct a poll to determine what percentage of people support her.If the candidate only wants a 10% margin of error at a 90% confidence level, what size of sample is needed?Give your answer in whole people.
A political candidate has asked you to conduct a poll to determine what percentage of people support her. If the candidate only wants a 4% margin of error at a 97.5% confidence level, what size of sample is needed? Give your answer in whole people.
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