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 90% confident that his estimate is in error by no more than three percentage points? Complete parts (a) through (c) below. a) Assume that nothing is known about the percentage of computers with new operating systems. n= 271 (Round up to the nearest integer.) b) Assume that a recent survey suggests that about 98% of computers use a new operating system. n= 22 (Round up to the nearest integer.) c) Does the additional survey information from part (b) have much of an effect on the sample size that is required? O A. Yes, using the additional survey information from part (b) dramatically increases the sample size. O B. No, using the additional survey information from part (b) only slightly increases the sample size. OC. No, using the additional survey information from part (b) does not change the sample size. O D. Yes, using the additional survey information from part (b) dramatically reduces the sample size.

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 90% confident that his estimate is in error by no more than three percentage points? Complete parts (a) through (c) below. a) Assume that nothing is known about the percentage of computers with new operating systems. n= 271 (Round up to the nearest integer.) b) Assume that a recent survey suggests that about 98% of computers use a new operating system. n= 22 (Round up to the nearest integer.) c) Does the additional survey information from part (b) have much of an effect on the sample size that is required? O A. Yes, using the additional survey information from part (b) dramatically increases the sample size. O B. No, using the additional survey information from part (b) only slightly increases the sample size. OC. No, using the additional survey information from part (b) does not change the sample size. O D. Yes, using the additional survey information from part (b) dramatically reduces the sample size.

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A First Course in Probability (10th Edition)

10th Edition

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Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

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Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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Concept explainers

Contingency Table

A contingency table can be defined as the visual representation of the relationship between two or more categorical variables that can be evaluated and registered. It is a categorical version of the scatterplot, which is used to investigate the linear relationship between two variables. A contingency table is indeed a type of frequency distribution table that displays two variables at the same time.

Binomial Distribution

Binomial is an algebraic expression of the sum or the difference of two terms. Before knowing about binomial distribution, we must know about the binomial theorem.

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Question

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 90% confident that his estimate is in error by no more than three percentage points? Complete parts (a) through (c) below.
a) Assume that nothing is known about the percentage of computers with new operating systems.
n= 271
(Round up to the nearest integer.)
b) Assume that a recent survey suggests that about 98% of computers use a new operating system.
n= 22
(Round up to the nearest integer.)
c) Does the additional survey information from part (b) have much of an effect on the sample size that is required?
O A. Yes, using the additional survey information from part (b) dramatically increases the sample size.
O B. No, using the additional survey information from part (b) only slightly increases the sample size.
O C. No, using the additional survey information from part (b) does not change the sample size.
O D. Yes, using the additional survey information from part (b) dramatically reduces the sample size.

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