A company manufacturing CDs is working on a new technology. A random sample of 603 Internet users were asked: "As you may know, some CDs are being manufactured so that you can only make one copy of the CD after you purchase it. Would you buy a CD with this technology, or would you refuse to buy it even if it was one you would normally buy?" Of these users, 57% responded that they would buy the CD. Complete parts a and b below. a) Create a 95% confidence interval for this percentage (53.1 %. 61.0 %) (Round to three decimal places as needed. Use ascending order.) b) if the company wants to cut the margin of error by two thirds, how many users must they survey? users. The company must survey a total of (Type a whole number.)
A company manufacturing CDs is working on a new technology. A random sample of 603 Internet users were asked: "As you may know, some CDs are being manufactured so that you can only make one copy of the CD after you purchase it. Would you buy a CD with this technology, or would you refuse to buy it even if it was one you would normally buy?" Of these users, 57% responded that they would buy the CD. Complete parts a and b below. a) Create a 95% confidence interval for this percentage (53.1 %. 61.0 %) (Round to three decimal places as needed. Use ascending order.) b) if the company wants to cut the margin of error by two thirds, how many users must they survey? users. The company must survey a total of (Type a whole number.)
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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Transcribed Image Text:A company manufacturing CDs is working on a new technology. A random sample of 603 Internet users were asked: "As you may know, some CDs are being manufactured so that you can only make one copy of the CD after you purchase it. Would you buy a CD with this technology, or
would you refuse to buy it even if it was one you would normally buy?" Of these users, 57% responded that they would buy the CD. Complete parts a and b below.
a) Create a 95% confidence interval for this percentage.
(53.1 %, 61.0 %)
(Round to three decimal places as needed. Use ascending order.)
b) If the company wants to cut the margin of error by two thirds, how many users must they survey?
users.
The company must survey a total of
(Type a whole number.)
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