The annual income of residents in a county is $42,000 with a standard deviation of $10,000. Under the assumption that the distribution of annual incomes is normal, between what two values do 95% of the incomes of county residents lie? $30,000 and $50,000 $40,000 and $44,000 $32,000 and $52,000 $22,000 and $62,000

The annual income of residents in a county is $42,000 with a standard deviation of $10,000. Under the assumption that the distribution of annual incomes is normal, between what two values do 95% of the incomes of county residents lie? $30,000 and $50,000 $40,000 and $44,000 $32,000 and $52,000 $22,000 and $62,000

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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Concept explainers

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.

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$30,000 and $50,000

$40,000 and $44,000

$32,000 and $52,000

$22,000 and $62,000

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