For normal distribution, what percentage of the data will fall in the interval of two standard deviations above and below the mean?

a. 50%
b. 65%
c. 68%
d. 95%


d. 95%

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Which design of MAP sensor produces a frequency (digital) output signal?

A) Silicon-diaphragm strain gauge B) Capacitor-capsule C) Ceramic disc D) Piezoresistivity design

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Each manufacturer of vitrified clay pipe designs its own joints specifically for its brand of pipe, so pipe from two manufacturers does not always join together properly. The term used to describe this situation is that the types of pipe and joints are

A. proprietary B. copyrighted C. trademarked D. protected

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In what year was oxyacetylene introduced?

A) 1836 B) 1929 C) 1902 D) 1859

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The parking or emergency brake on a heavy vehicle only be held in position by something that cannot look away like

Air brake

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