15 ! 1 to determine attitudes of costumers toward its products, an internet company asked visitors to its website to complete an online survey. which sampling technique did the company use? a) convenience sampling b) stratified sampling c) systematic sampling d) voluntary sampling

Volume of cylinder with a radius of 8cm and height of 25 cm

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?

Three consecutive integers have a sum of 234. what are the three integers