In the United States, 50% of workers classified as “private industry workers,” those working for non-government businesses, earn an hourly wage of $22.27 or more (SOURCE: National Compensation Survey: Occupational Earnings in the United States, 2010, Bulletin 2753, http://www.stats.bls.gov/ncs/ebs/). Suppose a particular family has a history of working for the government. The family has two parents and four adult-age kids. a. What is the probability th
Contingency Table
A contingency table can be defined as the visual representation of the relationship between two or more categorical variables that can be evaluated and registered. It is a categorical version of the scatterplot, which is used to investigate the linear relationship between two variables. A contingency table is indeed a type of frequency distribution table that displays two variables at the same time.
Binomial Distribution
Binomial is an algebraic expression of the sum or the difference of two terms. Before knowing about binomial distribution, we must know about the binomial theorem.
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In the United States, 50% of workers classified as “private industry workers,” those working for non-government businesses, earn an hourly wage of $22.27 or more (SOURCE: National Compensation Survey: Occupational Earnings in the United States, 2010, Bulletin 2753, http://www.stats.bls.gov/ncs/ebs/). Suppose a particular family has a history of working for the government. The family has two parents and four adult-age kids.
a. What is the probability that both parents and half of the kids are in the higher earning bracket of government workers?
b. What is the probability that only one parent and one child fall into the higher earning bracket of government workers?
c. Why is it not possible to group the entire family together as a unit of six individuals and “select two” to calculate the answer to Part b)? Calculate the answer to verify that you do not obtain the same probability by finding it this way.
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