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The probability that a life insurance salesperson following up a magazine lead will make a sale is 30%. A salesperson has two leads on a certain day.
The Hydronics Company is in the business of developing health supplements. Recently, the company's R&D department came up with two weight-loss plans
East-West Translations publishes textbooks of ancient Oriental teachings for English-speaking universities.
Gateway 2000, Inc., receives large shipments of microprocessors from Intel Corp. It must try to ensure that the proportion of microprocessors
180 patients were treated for disease X from 1991 to 1993, and their progress was followed to 1994. The treatment results are given in the table.
A Courtyard Hotel by Marriott conducted a survey of its guests. Sixty-two surveyors were completed.
A manager of a gasoline filling station is thinking about a promotion that she hopes will bring in more business to the full-service island.
Wages in the construction industry average $11.90 per hour with a standard deviation of $1.40. What percent of workers make less than $10.50 per hour
If X, Y are lognormal distribution, what the distribution of X/Y.
The table shows the number of smokers and nonsmokers by gender among 220 people. Assume one person is chosen at random from the 220.
A course in statistics is one of the most difficult at the local university. Because of this, for the past decade the university has arranged for teaching
A box of 9 gloves contains two left handed gloves and seven right handed gloves.
Replacement times for new Ford Taurus GL automobiles are normally distributed with a mean of 7.1 years and a standard deviation of 1.4 years
A bookstore wishes to carry a certain book in stock. Demand is probabilistic and replenishment of stock takes two days
The table below gives the qualification profile of the managers of a certain company:
To harvest all the wheat from a field requires 5 sunny days (although not necessarily consecutive days) and a farmer only has one week left to get the job
Is lack of sleep causing traffic fatalities? A study conducted under the auspices of the National Highway Traffic Safety Administration
A Myrtle Beach resort hotel has 120 rooms. In the spring months, hotel room occupancy is approximately 75%.
The time needed to complete a final examination in a particular college course is normally distributed with a mean of 80 minutes and a standard deviation of 10
The driving distance for the top 100 golfers on the PGA tour is between 284.7 and 310.6 yards (Golfweek, March 29, 2003)
Delta Airlines quotes a flight time of 2 hours, 5 minutes for its flights from Cincinnati to Tampa. Suppose we believe that actual flight times are uniformly
The service time at an inspection station is defined by the following distribution.
A metropolitan school system consists of three school districts-norths, south, central. The north district contains 25% of all students, the south district
A family has 4 children. The probability of having a boy is 50% (girl is the same 50%).
Three brands of cold medicine for Infants are stacked on a drug store's shelves in roughly equal amounts, but in locations with different accessibility