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A school in Bangkok requires that students take an entrance examination. After the examination, there is a drawing where 5 students are randomly selected
A side effect of a certain anesthetic used in surgery is the hiccups, which occurs in about 10% of the cases.
An experiment consists of tossing an ordinary coin five times. Recall that an experiment can produce one or more sample spaces
Of the 47 people who answered "yes" to a question, 8 were male. Of the 100 people who answered"no" to the question, 12 were male.
If you determine that for the graph of a standard normal distribution the cumulative area to the left of a z core is 0.4, what is the cumulative area
An army is composed of 5 divisions. Each division has 10,000 soliders. In each regiment the desertion rate is 2 soldiers per month. DESERTERS ARE REPLACED.
Write a program to compute binomial probabilities and compare the results with the Poisson approximation for the following cases:
One must select from a set of 12 components that are known to contain 4 faulty components.
An auto insurance agency was investigating accident rates for drivers in different age groups. The following contingency provides a joint probability
You would like to help some of your math-deficient friends understand probability before they loose too much on lottery tickets
Type i light bulbs function for a random amount of time having mean mui and standard deviation sigmai, i=1,2.
Assume that adults have IQ scores that are normally distributed with a mean of 100 and a standard deviation of 15.
Assume that human body temperatures are normally distributed with a mean of 98.20ºF and a standard deviation of 0.62 ºF.
Assume that a procedure yields a binomial distribution with a trial repeated n times. Use the binomial probability formula to find the probability
A contractor is considering a sale that promises a profit of $31,000 with a probability of 0.7 or a loss (due to bad weather, strikes, and such) of $13,000
The probabilities were obtained by entering the values of n = 6 and p = 0.167. In a clinical test of the drug lipitor, 16.7% of the subjects
For a particular group of taxpayers, 25 percent of the returns are audited. Six taxpayers are randomly selected from the group.
A test consists of multiple-choice questions, each having four possible answers (a,b,c,d) one of which is correct
A typical "combination" lock is opened with the correct sequence of three numbers between 0 and 49 inclusive. (A number can be used more than once.)
During the next year, Allen must decide whether to invest $10,000 in the stock market or in a CD at an interest rate of 9%
Sixty percent of the students at Scandia Tech drive to class and 30 percent have GPAs of at least 3.00. Ten percent of the students have a 3.00 GPA
Jim Sellers is thinking about producing a new type of electric razor for men. If the market were favorable, he would get a return of $100,000
A jar contains 5 yellow marbles, 16 green marbles, and 8 black marbles. If one marble is selected at random, what is the probability that it is not green?
1000 tickets for prizes are sold for $2 each. Seven prizes will be awarded - one for $400, one for $200, and five for $50. Steven purchases one of the tickets.
The results of a survey for an airline are shown below