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The national average for the price of a gallon of unleaded regular gas is $1.16. I believe the price is higher in my area of the country.
The records of a casualty insurance company show that, in the past, its clients have had a mean of 1.9 auto accidents per day with a standard deviation of 0.04.
If the population standard deviation ( s) is known then we use it in calculating the z-statistic as follows. z= [Xbar - m ] / [ s/ sqrt(n) ]
The manager of a computer software company wishes to study the number of hours senior executives spend at their desktop computers by type of industry
A national survey of restaurant employees found that 75% said work stress had a negative impact on their personal lives
40% of all books in publication in the US are printed outside of the country. For a random sample of 7 books in the US what is the probability
Drugstore.com was the first e-commerce company to offer Internet drugstore retailing. Drugstore.com customers were provided the opportunity
AOL Time Warner Inc.'s CNN has been the longtime ratings leader of cable television news. Nielsen Media Research indicated that the mean CNN viewing
A company compared the performance of two temperature instruments: one coupled to a process computer and the other used for visual control
The yields from an ethanol-water distillation column have a standard deviation of 0.01. Process specifications call for a target yield of 0.93
Review an article Hypothesis Testing and Power in Research by Carol P. Vojir Column Editor: Diane Hudson-Barr
In a recent national survey, the mean weekly allowance for a nine-year-old child from his parents was $3.65
Captopril is a drug designed to lower systolic blood pressure. When subjects were tested with this drug, their systolic blood pressure readings
It contains the results of a study on the academic preparation of MBA students and their performance in a Quantitative Analysis Course.
The management of Discount Furniture, a chain of discount furniture stores in the Northeast, designed an incentive plan for salespeople.
You are applying for a job at two companies. Company A offers starting salaries mean=$31000 and standard deviation = $12000.
Ms. Maria Wilson is considering running for mayor of the town of Bear Ghulch, Montana. Before completing the petitions, she decides to conduct a survey
The manufacturer of the X-15 steel-belted radial truck tire claims that the mean mileage the tire can be driven before the tread wears out is 60,000 miles
The county commissioners received a number of complaints from county residents that the Roxborough Fire Department
The manufaturer of the new subcompact Clipper claims that it will average "40 or more miles per gallon on the open road".
The manufacturer of the new subcompact Clipper claims that it will average "40 or more miles per gallon on the open road."
According to the historical data, the life expectancy in the United States is equal to the life expectancy in the United Kingdom
The following paired observations show the number of traffic citations given for speeding by Officer Dhondt and Officer Meredith of the South Carolina
Most air travelers now use e-tickets. Electronic ticketing allows passengers to not worry about a paper ticket, and it costs the airline companies
The "Washington State Population Survey" is conducted biennially to support research on health care issues and other economic factors