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Lieutenant Edgar Beaver believes that officers who take master's-level courses receive higher officer efficiency ratings (OERs). Using a sample of 100 officers, Beaver regresses OERs (Y-it ranges from 0 to 100) on the number of courses each officer took beyond the BA. He finds
What can Beaver say based on these results? Beaver has a 10-course master's degree. What is the best estimate of his OER? Place a 90% confidence limit around this estimate.
The average power used by a stereo speaker is 54 W. find the peak value of the ac voltage applied to the speaker
Determine what velocity would a proton need to circle Earth 1500 kilometer above the magnetic equator
An electron moves at a speed of v = 3 x 107 m/s parallel to and a distance d = 10 cm from a conducting wire carrying a current of I = 40 A. If the directions of the electron and current are as shown in the figure, what is the magnitude (in N) and ..
an isolated conductor of arbitrary shape has a net charge of 9.0 x 10-6 c. inside the conductor is a cavity within
A cockroach of mass m lies on the rim of a uniform disk of mass 4m that can rotate freely about its center like a merry-go-round. compute the angular velocity of the cockroach-disk system
Determine what must be the magnitude of the current in the outer loop so that the net magnetic field due to this combination of loops is zero at the common center of the loops
A skier starts from rest at the top of a frictionless incline of height 20.0 m, Find the skier's speed at the bottom
Solve simple one-dimensional motion problems involving the concepts of constant velocity and constant acceleration
A transmission line that has a resistance of 0.5 ohm per km of length is used to transmit 200 MW across 300 miles. what should be the transmission voltage
A square field measuring 100.0 m by 100.0 m has an area of 1.00 hectare. An acre has an area of 43,600 ff. If a country lot has an area of 120 acres, what is the area in hectares?
A car is going with a constant speed of 15 m/s (about 34 mph) in a school-crossing corner, where the speed limit is 10 m/s (about 22 mph). What is the distance traveled at that point
The nearest star to our own Sun is Proxima Centauri, 4.24 light-years away. If a spaceship travels at 0.75c, how much time is required for a one-way trip (a) according to an Earth observer, and (b) according to the captain of the ship?
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