Smoke detectors can malfunction if placed in temperatures above _____.
a. 120°F (48.8°C)
b. 140°F (60°C)
c. 160°F (71.1°C)
d. 180°F (82.2°C)
a. 120°F (48.8°C)
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Which of the following was NOT among prominent African-American cultural figures of the 1920s?
A. Joseph "King" Oliver B. Ralph Ellison C. "Jelly Roll" Morton D. Langston Hughes E. W.C. Handy
Head pressure is always _____ psi per foot of water and is measured at the lowest point of the water column.
a. 0.4335 b. 0.9923 c. 1.5000 d. 2.3380
The concentration of a reactant is a random variable with probability density function
a. What is the probability that the concentration is greater than 0.5?
b. Find the mean concentration.
c. Find the probability that the concentration is within ±0.1 of the mean.
d. Find the standard deviation ? of the concentrations.
e. Find the probability that the concentration is within ±? of the mean.
f. Find the cumulative distribution function of the concentration.
The term ____ refers to how long a device is on over a given period of time.
A. encryption B. duty cycle C. power consumption