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7. LIt is believed that 25% of U.S. homes have a direct satellite television receiver. (Show your for both parts.) a. How large a sample is necessary to estimate the true population of homes which do with 95% confidence and within 3 percentage points? b. How large a sample is necessary for a 95% confidence interval to be within 3 percentage points if nothing is known about the proportion?

7. LIt is believed that 25% of U.S. homes have a direct satellite television receiver. (Show your for both parts.) a. How large a sample is necessary to estimate the true population of homes which do with 95% confidence and within 3 percentage points? b. How large a sample is necessary for a 95% confidence interval to be within 3 percentage points if nothing is known about the proportion?

MATLAB: An Introduction with Applications
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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I need help with question 7 parts a and b
7. It is believed that 25% of U.S. homes have a direct satellite television receiver. (Show your for both parts.) a. How large a sample is necessary to estimate the true population of homes which do with 95% confidence and within 3 percentage points? b. How large a sample is necessary for a 95% confidence interval to be within 3 percentage points if nothing is known about the proportion?
Transcribed Image Text:7. It is believed that 25% of U.S. homes have a direct satellite television receiver. (Show your for both parts.) a. How large a sample is necessary to estimate the true population of homes which do with 95% confidence and within 3 percentage points? b. How large a sample is necessary for a 95% confidence interval to be within 3 percentage points if nothing is known about the proportion?
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