?What is the mean of a standard normal distribution?
A. ?0
B. ?1
C. ?2
D. ?5
Answer: A
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There is a special sale on engine oil. If you purchase more than one 12-quart case, you will receive a 5 percent discount. If you purchase six or more cases, you will receive a 10 percent discount. You have two vehicles that require an oil change every 4,000 miles. Vehicle #1 requires eight quarts per oil change plus one additional quart when you also change the oil filter. Vehicle #2 requires five quarts per change plus one quart whenever the filter is changed. Each year your family drives vehicle #1 about 16,000 miles and vehicle #2 about 32,000 miles. You change the oil filter every other time the oil is changed. The normal price for oil is $22.99 per case. Oil filters cost $4.99 each. How much will a one-year supply of oil cost for both vehicles?
Fill in the blank(s) with the appropriate word(s).
A MAP sensor is being tested. Technician A says that many MAP sensors act as a barometric pressure sensor when the ignition switch is turned off. Technician B says that on many MAP sensors the signal voltage should increase when the vacuum at the sensor decreases. Which technician is correct?
A) Technician A only B) Technician B only C) Both technicians D) Neither technician
A water-source system that recirculates water in pipes buried in the ground is:
A) A closed-loop system. B) Called a quasi-open loop because it still must have an air gap at the circulating pump. C) Considered a hybrid between an open- and a closed-loop system. D) An open-loop system.
From a 3D viewing point, a circle appears to be an ellipse. Under what conditions can a circle appear completely round?
a. When it is parallel to the XY plane b. When it is created using the Ttr (tan tan radius) option c. When it is located on a plane parallel to the viewing plane d. All of the above