Suppose you have the following estimation results from the quarterly data of 1960 Q1 to 1978 Q4: yt = 2:20 + 0:304x1t 3:48x2t + 0:34x3t (3:4) (0:078) (2:2) (0:15) where the standard errors are in parentheses, Residual Sum of Squares (RSS)=18.20, and Ex- plained Sum of Squares (ESS)=107.12. Do the following questions. (a) Determine the sample size.

Aportion of a line bounded by two points is defined as

Asmall (but heavy) particle placed in a glass of water will follow a zigzag motion because the particle will bounce off of the water molecules it meets. this is called brownian motion. a physicist simulates this on a computer, by varying the distance a particle can travel (called the mean free length), on average, before it collides with a water molecule and assigning the change in motion to be one of 8 directions, each with a similar probability. by running the simulated particle (with the same mean free length) many times she determines that it should take 15 seconds, on average, for the particle to fall to the bottom, with a standard deviation of 1.5 seconds. next she lets a real particle fall through a glass of water and finds that it took 18 seconds. what does she conclude, and why?

Weak battery is considered to be a part of routine a. inspection b. wear and tear c. maintenance d. check