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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
Three cards are drawn from a deck of 52 playing cards and not replaced. Find the probability of the following:
The table below shows the number of tests taken by 30 randomly selected college sophomores
An artist entered two paintings (Lighthouse and Old Cathedral) in a show. He feels that the probabilities are 0.15, 0.18, and 0.11, respectively
A university cafeteria line in the student center is a self-serve facility in which students select the food items they want and then form a single line
Last year, at Northern Manufacturing Company, 200 people had colds during the year. One hundred fifty-five people who did no exercising had colds
Steve Goodman, production foreman for the Florida Gold Fruit Company, estimates that the average sale of oranges is 4,700 and the standard deviation is 500
In its third year, a football team averaged 16,050 fans per game, with a standard deviation of 2,500 fans.
The director of quality for Harley Davidson is conducting his weekly spot check of the transmission gear box of the newly introduced Wind Phantom series
The Gift Boutique had been the target of many shoplifters in the past, but its newly installed camera security system has helped in the apprehension
If a person visits his dentist, suppose that the probability that he will have his teeth cleaned is 0.44, the probability that he will have a cavity filled