Expected operational time of the machine
A machine consists of two components, whose lifetimes have the joint density function f(x,y) = 1/50, for x>0, y>0, x+y<10. The machine operates until both components fail. Calculate the expected operational time of the machine.
Expected delivery within 24 Hours
A skydiver jumps out of a plane and fall 7.7 seconds before opening the parachute. What is the sky diver's speed when parachute opens?
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A 3 m x 3 m x 2.4 m room losses heat through the walls at a rate of 520 W. Determine the final temperature of the room after 2 hrs with the electric baseboard heater drawing 120 V and 4.5 A. The initial temperature of the room is 15 °C
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The data below are the temperatures on randomly chosen days during a summer class and the number of absences on those days. Construct a 95% confidence interval about the slope of the true least-squares regression line, for the data below, given th
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