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Question1
What test can be used to evaluate the mean HgbA1c 1 year before vs. mean HgbA1c 1 year after use of insulin pump? Perform this test and report a two tailed p-value. Also give a 95% Cl for mean difference in HgbA1c before minus the mean HgbA1c after use of the insulin pump.
Question2
Mary and Sally are in a foot race. When Mary is 22 m from finish line, she has a speed of 4.0 m / s and is 5.0 m behind Sally, who has a speed of 5.0 m / s. Sally thinks she has a simple win and so, throughout the remaining portion of the race, decelerates at a constant rate of 0.50 m/s2 to finish line. What constant acceleration does Mary now require during the remaining portion of the race, if she wishes to cross finish line side-by-side with Sally?
A 2.5 kg piece of the same metal, intitally at a temperature of 190°C is dropped into the water. If the water temperature rises from 16.0°C to 17.8°C, calculate the specific heat of the metal.
Two electrodes are placed in a calcium chloride solution and a potential difference is maintained between them. calculate the current in the solution
V_A is the electric potential at point a. V_A ( V_B
The position of an object as a function of time is given by , where is a constant. Find an expression for the instantaneous velocity
a sound wave of frequency 1225 hz travels through the air directly toward a wall, what is the initial wavelength of the sound
A 0.058 kg aluminum bullet traveling at 481 m/s strikes an armor plate and comes to a stop. what is the bullet's temperature change in degrees Celsius
An archer puts a 0.26 kg arrow to the bowstring. An average force of 213 N is exerted to draw the string back 1.3 m. unless otherwise directed, suppose that air resistance is negligible. Illustrate energy bar graphs to solve the problem.
A bat strikes a 0.145-kg baseball. Just before impact, the ball is traveling horizontally to the right at 40.0m/s , Find the vertical component of the average force on the ball
Two converging lenses, each of focal length 14.5 cm, are placed 59.2 cm apart, and an object is placed 27.4 cm in front of the first. Where is the final image relative to the second lens formed
A half-Atwood's machine consists of two masses, m1 = 8 kg and m2 = 5 kg, which are connected by a light string that passes over a pulley. what speed will it have just before hitting the floor
The position of a particle in cm is given by x = (7) cos 9?t, where t is in seconds, What is the frequency, What is the period, What is the amplitude of the particle's motion
Now a peg is placed 4/5 of the way down pendulum's path so that when the mass falls to its vertical position it hits and wraps around the peg. As it wraps around the peg and attains its maximum height it ends a distance of 3/5 L below its starting po..
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