Elongation (in percent) of steel plates treated with aluminum are random with probability density function
a. What proportion of steel plates have elongations greater than 25%?
b. Find the mean elongation.
c. Find the variance of the elongations.
d. Find the standard deviation of the elongations.
e. Find the cumulative distribution function of the elongations.
f. A particular plate elongates 28%. What proportion of plates elongate more than this?
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Las conexiones terminales mecánicas siempre deben:
a. apretarse hasta su ajuste. b. apretarse hasta un par de apriete especificado. c. apretarse si se produce sobrecalentamiento. d. aislarse con cinta u otros medios efectivos.
You will never see a pump with a profile of:
A) Low pressure and low flow. B) Low pressure and high flow. C) High pressure and high flow. D) High pressure and low flow.
What is the purpose of fuses and circuit breakers in a system?
A) Limit the resistivity of a component B) Limit the resistance in a circuit C) Limit the current in a circuit D) Limit the voltage across a component