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:

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
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Chapter10: Statistics
Section10.5: Comparing Sets Of Data
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Questions 17-18 refer to the following:

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

  1. 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
 
 
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