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Study Resources (Statistics)

Your company produces fire-prevention sprinkler systems. The average activation time for the systems is supposed to be about 25 seconds, and you should be quite concerned if the average activation time is significantly more than 25 seconds. The manager has asked you to test a random sample of 13 systems.
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Your company markets a computerized medical diagnostic program used to evaluate thousands of people. The program scans the results of routine medical tests (pulse rate, blood tests, etc.) and refers the case to a doctor if there is evidence of a medical problem. The program makes decision about each person. .
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You wish to estimate, with 95% confidence, the population proportion of U.S. adults who say that chocolate is their favorite ice cream flavor. Your estimate must be accurate within 5% of the population proportion. (a) No preliminary estimate is available. Find the minimum sample size needed. (b) Find the minimum.
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Your Economics instructor assigns your class to investigate factors associated with the gross domestic product (GDP) of nations. Each student examines a different factor (such as life expectancy, literacy rate, etc) for a few countries and reports to the class. Apparently some of your classmates do not understand Statistics very.
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You want to determine if males receive longeT sentences than females when they are convicted i similar crimes and have a similar history of offending. You have the following information for males and females who have been convicted of burglary. You believe males will receive longer sentences than females. Solve.
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