The following table gives the joint probability distribution between employment status and college graduation among those either employed or looking for work (unemployed) in the working age U.S. population, based on the 1990 U.S. Census. Joint Distribution of Employment Status and College Graduation in the U.S. Population Aged 25-64, 1990 Unemployed (Y=0) Non-college grads (X = 0) College grads (X= 1) Total (a) Compute E(Y). 0.045 0.005 0.050 Employed (Y= 1) 0.709 0.241 0.950 Total 0.754 0.246 1.000

The following table gives the joint probability distribution between employment status and college graduation among those either employed or looking for work (unemployed) in the working age U.S. population, based on the 1990 U.S. Census. Joint Distribution of Employment Status and College Graduation in the U.S. Population Aged 25-64, 1990 Unemployed (Y=0) Non-college grads (X = 0) College grads (X= 1) Total (a) Compute E(Y). 0.045 0.005 0.050 Employed (Y= 1) 0.709 0.241 0.950 Total 0.754 0.246 1.000

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Question

The following table gives the joint probability distribution between employment status and
college graduation among those either employed or looking for work (unemployed) in the
working age U.S. population, based on the 1990 U.S. Census.
Joint Distribution of Employment Status
and College Graduation in the U.S. Population Aged 25-64, 1990
Unemployed (Y = 0)
Non-college grads (X = 0)
College grads (X= 1)
Total
(a) Compute E(Y).
0.045
0.005
0.050
Employed (Y= 1)
0.709
0.241
0.950
Total
0.754
0.246
1.000

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