The average burning times of American Standard lightbulbs (made in China) are normally distributed, with a mean of 1,300 hr and a standard deviation of 130 hr, according to quality control studies. A company installs a large number of these bulbs at the same time. After what amount of time should we expect 7.5% of them to burn out? (Hint: This will split the total area under the normal curve into an area of 0.0750 on the left-hand tail and 0.9250 on the other.)
A. 
hr
B. 
hr
C. 
hr
D. 
hr
E. 
hr
Answer: C
Computer Science & Information Technology
You might also like to view...
Use the Database Documenter to create a report that contains detailed information about macros
Indicate whether the statement is true or false
Computer Science & Information Technology
Machines called _______ enable self-service transactions in busy locations, such as hotels and airports.
A. kiosks B. drones C. robots D. pop-ups
Computer Science & Information Technology
Which of the following illustrations is a predesigned diagram made up of shapes containing text that illustrate a concept or idea?
A. Picture B. Clip Art C. SmartArt D. Screenshot
Computer Science & Information Technology
To ensure that query results are listed in a desired order, use the ORDER BY clause.
Answer the following statement true (T) or false (F)
Computer Science & Information Technology