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Daily fluctuations of the French CAC-40 stock index from March to June 1997 seem to follow a normal distribution with mean of 2,600 and standard deviation of 50
What is the expected value and variance of the total number of trials that the operator will make?
The cafeteria in a building offers three different lunches. The demands for the three types of lunch on any given day are independent and Poisson distributed.
What is the probability that more than three items in the sample are defective? If items are selected randomly until the first defective item.
If the airbag activates at a deceleration of 12 mph/s or more, Iacocca would get hurt. What is the probability of his being hurt in this demonstration?
The time interval between two successive customers entering a store in a mall is exponentially distributed with a mean of 6.55 seconds.
If each is believed to have a 0.25 probability of voting yes on the issue, what is the probability that Grundig will be dumped?
According to an article in USA Today, 60% of 7- to 12-year-olds who use the Internet do their schoolwork on line.
A foreman observes that the chance that the TBF is more than 72 hours is 50%, and he quotes 72 hours as the MTBF.
A sensitive measuring device is calibrated so that errors in the measurements it provides are normally distributed with mean 0 and variance 1.00.
Based on the survey conducted by a municipal administration in the Netherlands, Monday appeared to be managements’ preferred day for laying off workers.
A shipment of 100 pins contains some defectives. To decide whether to accept the shipment, the consumer follows a sampling plan where 15 items.
A recent study published in the Toronto Globe and Mail reveals that 25% of mathematics degrees from Canadian universities and colleges are awarded to women.
An article published in Access magazine states that according to a survey conducted by the American Management Association.
An article published in BusinessWeek says that according to a survey by a leading organization 45% of managers change jobs for intellectual challenge.
Estimates published by the World Health Organization state that one out of every three workers may be toiling away in workplaces that make them sick.
You'll be writing up your methods section for your term project. We need to calculate some basic information about our sample
A recent survey published in BusinessWeek concludes that Gatorade commands an 83% share of the sports drink market versus 11% for Coca-Cola.
The time between customer arrivals at a bank has an exponential distribution with a mean time between arrivals of three minutes.
Lightbulbs manufactured by a particular company have an exponentially distributed life with mean 100 hours.
The Bombay Company offers reproductions of classic 18th- and 19th-century English furniture pieces, which have become popular in recent years.
Out of 20 randomly chosen people what is the probability that at most 3 will suffer from high blood pressure?
Consider the situation in the previous problem, and assume that the distribution holds for all weeks throughout the year and that weekly orders.
An analyst kept track of the daily price quotation for a given stock. The frequency data led to the probability distribution of daily stock price.
Ten wireless customers are chosen. Under what conditions is the number of Verizon customers a binomial random variable?