When changing the brake pads on a Ford Escape hybrid, what precaution must be taken before removing the brake pads?
A) Use a scan tool to enter Pad Service Mode
B) Always change the rear pads before changing the front pads
C) Only change one pad at a time
D) Block all 4 wheels
A
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What three times of the year are ideal for optimal grass seed germination?
What will be an ideal response?
Sensible heat transfer accounts for __________ to ___________ of the cooling effect in a cooling tower.
a. 10% to 20% b. 40% to 70% c. 80% to 90% d. 90% to 100%
The article “Modeling Arterial Signal Optimization with Enhanced Cell Transmission Formulations” presents a new method for timing traffic signals in heavily traveled intersections. The effectiveness of the new method was evaluated in a simulation study. In 50 simulations, the mean improvement in traffic flow in a particular intersection was 654.1 vehicles per hour, with a standard deviation of 311.7 vehicles per hour.
a. Find a 95% confidence interval for the improvement in traffic flow due to the new system. b. Find a 98% confidence interval for the improvement in traffic flow due to the new system. c. A traffic engineer states that the mean improvement is between 581.6 and 726.6 vehicles per hour. With what level of confidence can this statement be made? d. Approximately what sample size is needed so that a 95% confidence interval will specify the mean to within ±50 vehicles per hour? e. Approximately what sample size is needed so that a 98% confidence interval will specify the mean to within ±50 vehicles per hour?
If an insulated wire rubbed through a part of the insulation and the wire conductor touched the steel body of a vehicle, the type of failure would be called _____________
A) A short to voltage B) A short to ground C) An open D) A chassis ground