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Pre- study scores versus post- study scores for a class of 120 college freshman english students were considerated. The residual plot for the least squares regression line showed no pattern. The least squares regression line was y^=0.2+0.9x withwith a correlation coefficient r=0.76. What percent of the variation of post-study scores can be explained bt the variation in pre- study scores? A. 76.0% B. 52.0% C. 57.8% D. 87.2%.
Tony rented a truck for one day. There was a base fee of 20.99 , and there was an additional charge of 99 cents for each mile driven. Tony had to pay 180.38 when he returned the truck. For how many miles did he drive the truck?
Make up a differential equation that you feel confident possesses only the trivial solution y = 0. Explain your reasoning.
the local varsity club spent 40 of its budget on art supplies 15 percent on t-shirts 10 percent on photocopying. if the
Develope a formula for the overall probability of kill, assuming that N defensive missles are launched.
A department store believes that telephone calls come into the switchboard at 10-minute intervals, according to a Poisson distribution. Before ordering new equipment, the store wishes to determine whether the Poisson model is a valid assumption.
Would someone be able to explain to me how we would find antichains and chains of a powerset? For example, if we had the power set of 4 - P([4]) then how would we derive the antichains, and symmetric chains?
Find coordinate of centroid using multiple integral method -Determine the z-coordinate of the centroid of G.
What are all the values that a standard deviation s can possibly take?
An Art dealer sold two artworks for $1520 thereby making a profit of 25% on the first work and 10% profit on the other, whereas if he had approached any exhibition he would have sold them together for $1535 with a profit of 10% on the first and 25..
Probability: Problems and Solutions, How many ways are there of drawing a red, a black, and a green ball from a bucket with 2-Red, 2-Black, and 5-Green balls?
A lighthouse is located on a small island 4 km away from the nearest point P on a straight shoreline and its light makes four revolutions per minute. How fast is the beam of light moving along the shoreline when it is 1 km from P? (Round your answ..
It would normally follow on from work on sequences and fractions-Ruth was investigating fraction differences. She wrote down this sequence of fractions:
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