A roadside assistance service wants to determine the proportion of service calls which require calling a Subcontractor (locksmith). A random sample of n = 300 is taken from the call database. 46 of the 300 calls required .calling a locksmith At the 95% Confidence Level, the error bound for the proportion is:

A roadside assistance service wants to determine the proportion of service calls which require calling a Subcontractor (locksmith). A random sample of n = 300 is taken from the call database. 46 of the 300 calls required .calling a locksmith At the 95% Confidence Level, the error bound for the proportion is:

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 2E

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17-18 fast please

Questions 17-18 refer to the following:

At the 95% Confidence Level, the error bound for the proportion is:

Group of answer choices

0.0204

0.0408

0.0816

0.1126

To narrow the Confidence Interval at the same confidence Level the sample size must be?

Group of answer choices

Increased

Decreased

There is not enough information

Definition Definition Number of subjects or observations included in a study. A large sample size typically provides more reliable results and better representation of the population. As sample size and width of confidence interval are inversely related, if the sample size is increased, the width of the confidence interval decreases.

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