Mathematics, 05.10.2019 14:30 dawood2042
Unnithan, houser, and fernhall (2006) were interested in whether playing the game dance dance revolution (ddr) met the american college of sports medicine recommendations for exercise to improve cardiovascular health. twenty-two adolescents, 10 of whom were classified as overweight and 12 of whom were not overweight, played ddr for 12 minutes. during the 12 minutes, the researchers measured each participant's heart rate. on average, the researchers found no difference between the heart rates of the two groups. both groups' heart rates were above the minimum recommended for cardiovascular exercise. which of these requires an inferential statistic?
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Mathematics, 21.06.2019 15:20
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?
Answers: 1
Mathematics, 21.06.2019 18:00
Look at arnold's attempt to solve the equation for b: 3b = 12 b = 3 · 12 b = 36 describe the mistake that arnold made.
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Mathematics, 21.06.2019 18:30
Afarm that has 4 x 10^2 acres has 1.2 x 10^5 cattle. what is the average number of cattle per acre? write the answer in scientific notation. answere asap
Answers: 2
Unnithan, houser, and fernhall (2006) were interested in whether playing the game dance dance revolu...
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