Find the margin of error and 95% confidence interval for the following surveys. Round all answers to 2 decimal places. (a) A survey of 500 people finds that 64% plan to vote for Smith for governor. Margin of Error (as a percentage): Confidence Interval: % to % (b) A survey of 1500 people finds that 61% support stricter penalties for child abuse. Margin of Error (as a percentage): Confidence Interval: % to %
Find the margin of error and 95% confidence interval for the following surveys. Round all answers to 2 decimal places. (a) A survey of 500 people finds that 64% plan to vote for Smith for governor. Margin of Error (as a percentage): Confidence Interval: % to % (b) A survey of 1500 people finds that 61% support stricter penalties for child abuse. Margin of Error (as a percentage): Confidence Interval: % to %
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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Question
Find the margin of error and 95% confidence interval for the following surveys. Round all answers to 2 decimal places.
(a) A survey of 500 people finds that 64% plan to vote for Smith for governor.
Margin of Error (as a percentage):
Confidence Interval: % to %
(b) A survey of 1500 people finds that 61% support stricter penalties for child abuse.
Margin of Error (as a percentage):
Confidence Interval: % to %
Expert Solution
Step 1
From the provided information,
Confidence level = 95%
a)
Sample size (n) = 500
Sample proportion (p̂) = 0.64
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