Oxygen must be present with a fuel for burning to occur.
Answer the following statement true (T) or false (F)
True
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Three types of hazards associated with high-pressure systems are __________, ____________ and __________.
Fill in the blank(s) with the appropriate word(s).
Reptiles are _____, that is, their body temperature is directly related to the outside air temperature
a. cold blooded b. ectothermic c. neither a nor b d. both a and b
Oven thermostats were tested by setting them to350°F and measuring the actual temperature of the oven. In a sample of 67 thermostats, the average temperature was 348.2°F and the standard deviation was 5.1°F.
a. Find a 90% confidence interval for the mean oven temperature. b. Find a 95% confidence interval for the mean oven temperature. c. What is the confidence level of the interval(347.5, 348.9)? d. How many thermostats must be sampled so that a 90% confidence interval specifies the mean to within ±0.8°F? e. How many thermostats must be sampled so that a 95% confidence interval specifies the mean to within ±0.8°F?
A 132 in^3 engine operates at 4500 RPM and has an MEP value of 140 psi. The brake horsepower at 4500 RPM is measured to be 87 bhp. Calculate the mechanical efficiency of this engine, and round to the nearest tenth of a percent
What will be an ideal response?