A programmer plans to develop a new software system. In planning for the operating system that he will use, he needs to estimate the percentage of computers that use a new operating system. How many computers must be surveyed in order to be 95% confident that his estimate is in error by no more than one percentage point? Complete parts (a) through (c) below. a) Assume that nothing is known about the percentage of computers with new operating systems. b) Assume that a recent survey suggests that about88%of computers use a new operating system. c) Does the additional survey information from part (b) have much of an effect on the sample size that is required?
A programmer plans to develop a new software system. In planning for the operating system that he will use, he needs to estimate the percentage of computers that use a new operating system. How many computers must be surveyed in order to be 95% confident that his estimate is in error by no more than one percentage point? Complete parts (a) through (c) below. a) Assume that nothing is known about the percentage of computers with new operating systems. b) Assume that a recent survey suggests that about88%of computers use a new operating system. c) Does the additional survey information from part (b) have much of an effect on the sample size that is required?
Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter11: Data Analysis And Probability
Section11.4: Collecting Data
Problem 7E
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A programmer plans to develop a new software system. In planning for the operating system that he will use, he needs to estimate the percentage of computers that use a new operating system. How many computers must be surveyed in order to be 95% confident that his estimate is in error by no more than one percentage point? Complete parts (a) through (c) below.
a) Assume that nothing is known about the percentage of computers with new operating systems.
b) Assume that a recent survey suggests that about88%of computers use a new operating system.
c) Does the additional survey information from part (b) have much of an effect on the
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