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A recent study indicated that 26% of the 170 women over age 55 in the study were widows. Round up your answers to the next whole for the following questions. of 2 large a sample must you take to be 95% confident that the estimate is within 0.05 of the true proportion of women over age 55 who are ws? n=296 : 1/2 = 2 of 2 o estimate of the sample proportion is available, how large should the sample be? n= X S

A recent study indicated that 26% of the 170 women over age 55 in the study were widows. Round up your answers to the next whole for the following questions. of 2 large a sample must you take to be 95% confident that the estimate is within 0.05 of the true proportion of women over age 55 who are ws? n=296 : 1/2 = 2 of 2 o estimate of the sample proportion is available, how large should the sample be? n= X S

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
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**Sample Size Calculation for Estimating Proportions** **Context:** A recent study indicated that 26% of the 170 women over age 55 in the study were widows. Round up your answers to the next whole number for the following questions. **Part 1 of 2:** How large a sample must you take to be 95% confident that the estimate is within 0.05 of the true proportion of women over age 55 who are widows? \[ n = 296 \] **Progress Bar:** Part: 1 / 2 (partially filled progress bar indicating completion of the first part) **Part 2 of 2:** If no estimate of the sample proportion is available, how large should the sample be? \[ n = \; \boxed{}\] The empty box indicates a placeholder for the answer, with options for resetting or confirming the entry.
Transcribed Image Text:**Sample Size Calculation for Estimating Proportions** **Context:** A recent study indicated that 26% of the 170 women over age 55 in the study were widows. Round up your answers to the next whole number for the following questions. **Part 1 of 2:** How large a sample must you take to be 95% confident that the estimate is within 0.05 of the true proportion of women over age 55 who are widows? \[ n = 296 \] **Progress Bar:** Part: 1 / 2 (partially filled progress bar indicating completion of the first part) **Part 2 of 2:** If no estimate of the sample proportion is available, how large should the sample be? \[ n = \; \boxed{}\] The empty box indicates a placeholder for the answer, with options for resetting or confirming the entry.
Expert Solution
Step 1

Given that 

Population proportion p=26%=0.26

Margin of error =E=0.05

95%.

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