We wish to estimate what percent of adult residents in a certain county are parents. Out of 200 adult residents sampled, 86 had kids. Based on this, construct a 90% confidence interval for the proportion p of adult residents who are parents in this county. Express your answer in tri-inequality form. Give your answers as decimals, to three places.
We wish to estimate what percent of adult residents in a certain county are parents. Out of 200 adult residents sampled, 86 had kids. Based on this, construct a 90% confidence interval for the proportion p of adult residents who are parents in this county. Express your answer in tri-inequality form. Give your answers as decimals, to three places.
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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Step 1: Given
n=200
x=86
Sample proportion
The level of significance is 0.10 (=1–0.90). Using Excel formula “=NORM.S.INV(1-(0.1/2))”, the critical value for 90% confidence level is obtained as 1.645.
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