Recent content by Tchao

Let's say that the correlation coefficient between X and Y were swapped so that the correlation coefficient between Y and X. If we were to compared the correlation coefficient between X and Y and Y and X. Based on my understanding of correlation coefficient, it doesn't matter if f X and Y were...

Homework Statement If the slope of the regression line is negative and the correlation coefficient is -0.5, coefficient of determination is: Homework Equations coefficient of determination: r2 = 1 - SSE/SST correlation coefficient: r = Sxy / (√Sxx * √Syy ) The Attempt at a Solution r =...

Homework Statement Find the area between the parametric curve, x(t)=cos(t), y(t)=sin^2(t) and the x-axis Homework Equations - A = ∫ₐᵇ y(t) x'(t) dt The Attempt at a Solution =http://imgur.com/a/UA48d - My work shown in the link provided without the bounds, sorry for not rotating the image and...

Hi, I was wondering which course will be more beneficial to take first for a first year student majoring in computer science? Note: I tend to dislike proofs and theories. Discrete Structures - An introduction to the basic concepts of statistical analysis with special emphasis on engineering...

Homework Statement Which cases are examples of static equilibrium? 1. A box sliding down a ramp. 2. A baseball after being hit. 3. A box sliding along a horizontal surface. 4. A perfectly upright freely spinning top 5. A freely swinging simple pendulum 6. A spinning astronaut floating out in...

So, I get 3.09 s and 0.990 s when solving using the quadratic equation. The 0.990 s would be the solution to problem A and the 3.09 s would be the solution to problem.

Homework Statement a. If a ball is launched straight upwards from the ground with an initial velocity of 20.0 m/s, how long does the ball take to reach a height of 15.0 m on the way up? b. For the same situation, at what time does the ball reach 15.0 m on the way back down? c. If a ball is...

Hi I am Tony Chao