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The State Police are trying to crack down on speeding on a particular portion of the Massachusetts Turnpike. To aid in this pursuit, they have purchased a new radar gun that promises greater consistency and reliability. Specifically, the gun advertises ± one-mile-per-hour accuracy 90% of the time; that is, there is a 0.90 probability that the gun will detect a speeder, if the driver is actually speeding. Assume there is a 1% chance that the gun erroneously detects a speeder even when the driver is below the speed limit. Suppose that 96% of the drivers drive below the speed limit on this stretch of the Massachusetts Turnpike.
a. What is the probability that the gun detects speeding and the driver was speeding? (Round your answer to 4 decimal places.)
Probability
b. What is the probability that the gun detects speeding and the driver was not speeding? (Round your answer to 4 decimal places.)
c. Suppose the police stop a driver because the gun detects speeding. What is the probability that the driver was actually driving below the speed limit? (Round your answer to 4 decimal places.)
A researcher posed a null hypothesis that there was no significant difference between boys and girls on a standard memory test. She randomly sampled 100 girls and 100 boys in a community and gave them the standard memory test. What is the standard..
Whether you use Microsoft Word or WordPerfect, save your document as .rtf (rich text format). Doing so ensures I will be able to open and read your document.
The U.S.Census Bureau announced that the median sales price of new homes sold i April 2009 was $221,660, and the mean sales price waas $274,300. Assume that the standard deviation of the prices is $90,000.
The undergraduate grade point average (GPA) for students admitted to the top graduate business schools was 3.37 (Best Graduate Schools, U.S. News and World Report, 2001).
a. Figure the means and standard deviations for the each group: governors and CEOs. b. Explain, to a person who has never had a course in statistics, what you have done.
in a test of weld strength 80 of tests result in a fracture in the weldwhile 20 result in fracture in the beam. let x
A political action committee decided to poll its membership to determine if they were in favor of a certain potential law, similar to gun control.
For the system of Problem P10.30, use a phase-lag compensator and attempt to achieve a phase margin of approximately 50°. Determine the actual overshoot and peak time for the compensated system.
What is the formula for the exclusive range?
Compute and compare the proportions of head injury for the group with helmets versus the group without helmets. What would be your conclusion?
consider a roulette wheel with 18 red 18 black and 2 green spaces. if we only consider 1 spin the conditional
For monthly volume of 300 tables, find out total cost, total revenue, and profit.
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