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The Stripes C-store chain reports that 7% of its credit card holders will default within 5 years. It just mailed out 12 new cards today.
The average annual cost of automobile insurance is $687 (National Association of Insurance Commissioners, January 2003). Use this value as the population mean
Suppose that we want to select a sample of children identified as learning disabled under special education for a program designed to improve reading ability
You can invest in one of 3 projects: (payoffs modeled as discrete distributions)
The average weight of packages shipped by a courier company is 55 kg with a standard deviation of 20 kg. In a sample of 100 packages, what is the probability
A game is played in which one of two players chooses a dice from a set of three die. After the first player chooses, the second player chooses a dice
The industry average salary is $140,000, and the standard deviation of salaries in the industry is $20,000.
The U.S. Bureau of Labor Statistics collected data on the occupations of workers 25 to 64 years old. The following table shows the number of male
For each example state whether or not the negative binomial distribution is appropriate, briefly explain why or why not.
How many permutations of three items can be selected from a group of six? Use the letters A,B,C,D,E and F to indentify the items
Linda owns a small business. Use the probability distribution below, where X represents the number of employees who call in sick on a given day.
A certain airplane has 2 independent alternators to provide electrical power. The probability that a given alternator will fail on a 1 hour flight is 0.02
You are the Operations Manager for a candy manufacturing company. The Marketing Department has printed new labels for your 1-pound (16 oz)
A college would like to have an entering class of 1200 students. Because not all students who are offered admission accept
Many vehicles used in space travel are constructed with redundant systems to protect the flight crew and their equipment
Suppose it is known that the distribution purchase amounts by customers entering a popular retail store is approximately normal with mean $25
Consider the following continuously operational job shop. Inter arrival times of jobs are described as follows:
In the 107th Congress, the Senate consists of 13 women and 87 men. If a lobbyist for the tobacco industry randomly selects three different senators
For a sample selected from a population with a mean of µ=50 and a standard deviation of s= 10:
The heights of women at a large university are approximately bell-shaped, with a mean of 65 inches and standard deviation of 2.5 inches.
A person claims to have ESP (extrasensory perception). A coin is tossed 16 times, and each time the person is asked to predict in advance
Determine the value of c that makes the function f(x,y) = c(x+y) a joint probability density function over the range:
Expectation and variance of a random variable
An audit conducted by the St. Aleanis Hospital has determined that 15% of all patient bills contain an error of one form or another
A random variable Y is uniformly distributed over a range of 0 to 2*pi. Another random variable X is related to Y by X=cos(Y)