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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)
A recent study of the hourly wages of maintenance crew members for major airlines showed that the mean hourly salary was $20.50, with a standard deviation
During summer weekdays, boats arrive at the inlet drawbridge according to the Poisson distribution at a rate of 3 per hour.
From the data I gathered I developed histograms and calculated descriptive statistics
A stock price is currently $100. Over each of the next two three-month periods it is expected to increase by 10% or fall by 10%.
Wildlife Hummingbirds Selasphorus sasin is the scientific name for what is commonly called "Allen Hummingbird"
Use this table to response questions below: Some students were asked if they carry a credit card. Here are the responses.
On average, 40% of U.S. beer drinkers order light beer.
Some normal probability distributions may have the same mean, but their standard deviation may be different
How to calculate probabilities without knowing the std deviation.
A financial analyst estimates that the probability that the economy will experience a recession in the next 12 months is 20%
Money magazine reported that the average price of gallon of gasoline in the United States during the first quarter of 2001 was $ 1.46.