determine the margin of error, E, and a confidence interval for the average household income in Indian River county. R

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 7PPS
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An economist would like to estimate the average household income in Indian River county. The mean household income of a random sample of 269 families in Indian River county was found to be $ 47, 025 The standard deviation of the household incomes of all households in Indian River county is known to be $1,112 Using a 96confidence level, determine the margin of error, E, and a confidence interval for the average household income in Indian River county. Report the confidence interval using interval notation. Round solutions to two decimal places, if necessary . 

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