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An experiment was conducted to compare four different preschool curricula that were adopted in four different classrooms. Reading readiness proficiency was used as a blocking variable (below proficient, at proficient, above proficient). The mean scores on the dependent variable, letter recognition, are listed here for each cell. The intention of the treatment (i.e., the curriculum) is to increase letter recognition.
Use these cell means to graph the interaction between curriculum and reading readiness proficiency.
a. Is there an interaction between type of curriculum and reading readiness proficiency?
b. What kind of recommendation would you make to teachers?
a golfer imparts a speed of 30.0 ms to a ball and it travels the maximum possible distance before landing on the green.
Find (a) the ratio M/m; (b) the velocity of centre of mass; (c) the total kinetic energy of the two particles in the centre of mass; and (d) the final kinetic energy of m in the laboratory system.
a bullet is fired horizontally at a block of wood that is suspended by a string. the bullet strikes the block and is
The distance a car travels on a tank of gasoline is a random variable.
find the center of mass of a uniformly solid cone of base diameter 2a and height h and a solid hemisphere of raduis a where the two bases are touching
A hoodlum throws a stone vertically downward with an initial speedof 11.3 m/s from the roof of abuilding, 28.0 m above theground. How long does it take the stone to reach the ground?
At a coal burning power plant a steam turbine is operated with a power output of 475 MW. Find at what rate is heat discarded to the environment by this power plant
A 160 W street lamp is operated for 12 hours a day. How much energy does it take to operate the lamp
An observer sees two spaceships moving in opposite directions, Find the speed of one spaceship relative to the other
the power company charges 10 cents per kilowatt-hour, explain how much will it cost to leave the bulb on for 30 days? Show your work.
A hollow sphere of negligible mass and radius R is completely filled with a liquid so that it's density is p. What is the density of the enlarged sphere
Consider a current carrying loop of wire. An electron is shotdirectly through loop's center perpendicular to the plane of theloop. What is the trajectory of the electron? Consider only themagnetic force here and no other forces.
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