The following crosstabulation shows household income by educational level of
The following crosstabulation shows household income by educational level of the head of household Statistical Abstract of the United States, 2008).


a. Develop a joint probability table.
b. What is the probability of a head of household not being a high school graduate?
c. What is the probability of a head of household having a bachelor’s degree or more education?
d. What is the probability of a household headed by someone with a bachelor’s degree earning $100,000 or more?
e. What is the probability of a household having income below $25,000?
f. What is the probability of a household headed by someone with a bachelor’s degree earning less than $25,000?
g. Is household income independent of educationallevel?
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