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Use the data in GPA2.RAW for this exercise.Estimate the model sat 5 b 0 1 b 1 hsize 1 b 2 hsize 2 1 u ,
where hsize is the size of the graduating class (in hundreds), and write the results in the usual form. Is the quadratic term statistically significant?
Using the estimated equation from part (i), what is the "optimal" high school size? Justify your answer.
Is this analysis representative of the academic performance of all high school seniors? Explain.
Find the estimated optimal high school size, using log( sat ) as the dependent variable. Is it much different from what you obtained in part (ii)?
a horizontal spring-mass system has low friction spring stiffness 185 nm and mass 0.3 kg. the system is released with
A rocket is fired vertically and ascends with a fix vertical acceleration of 20 m/s2 for 1.0 minute. Find the total time elapsed from takeoff until the rocket strikes the Earth
a 40 g block of of ice is cooled to -72 C and then is added to 650 g of water in an 80 g copper calorimeter at a temperature of 24C, determine the final temperature of the system consisting of the ice
q1. a tennis ball of mass 57 g travels with velocity lt 48 0 0 gt ms toward a wall. after bouncing off the wall the
The ratio of 14C to 12C in living organisms is 1.3E-12. How long ago, in years was the organism alive
lithium has two stable isotopes 6li and 7li. if a sample is composed of 39 of the lighter isotope with the balance
A bullet of mass 10g and speed 500 m/s is fiered into a door and gets embeded exactly at the centre of the door, Calculate the angular speed of the door just after the bullet embeds into it
The disk and hub together have a mass of m=5 kg and mass moment of inertia (about the center) I=2 kgm^2. The disk radius is 3 m and the hub radius is 1 m. The disk rolls without slip. If after 1 revolution, the angular velocity of the disk and hub..
A pendulum hangs from an inclined wall. Suppose that this pendulum is released at an initial angle of 10 degrees and it bounces off the wall elastically when it reaches an angle of -5 degrees
The giant swing at a country fair consists of a vertical central shaft with a number of horizontal arms attached at its upper end. Find the time of one revolution of the swing if the rod supporting the seat makes an angle of 30 degrees with the vert..
A small object of mass 0.025 kg and charge 2.5 µC hangs from the ceiling by a thread. Find the tension in the thread
What is the vertical or y-component of the acceleration (ay) of the golf ball as it falls? Give magnitude, direction, and units.
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