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Solve the problem.
-A test of sobriety involves measuring the subject's motor skills. Twenty randomly selected sober subjects take
the test and produce a mean score of 41.0 with a standard deviation of 3.7. At the 0.01 level of significance, test
the claim that the true mean score for all sober subjects is equal to 35.0. Use the traditional method of testing
hypotheses.
Relay
Any of a number of devices that receives a signal and then effects an action. In vehicle electrical circuits, relays are used to allow a small current circuit to control a large current circuit such as in a starter relay. Also known as a pilot.
Transistor
A semiconductor device used to amplify or switch electronic signals and electrical power, fundamental in modern electronic circuits.
V-Ref
Reference voltage. ECU or ECM conditioned voltage (usually 5 volts DC) supplied to various sensors (such as thermistors, potentiometers) in truck electronic circuits. In most cases, a portion of the voltage is returned to indicate the status of sensor.
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