Mathematics, 06.01.2020 04:31, shazanah95
The tensile strength of a certain type of wire is normally distributed with a mean of 84.5 and a standard deviation of 4.5. find the standard error of the mean of a sample of 64 wires.
a. 14.3
b. 5.3254439
c. 0.5625001
d. 0.0703126
Answers: 3
Mathematics, 21.06.2019 15:20, aliceotter2007
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 16:30, pennygillbert
Which of the following answers is 5/25 simplified? 1/5 5/5 2/5 1/25
Answers: 2
Mathematics, 21.06.2019 20:30, jonmorton159
Aword processing program requires a 7- digit registration code made up of the digits 1,2,4,5,6,7 and 9 each number has to be used and no number can be used mor than once how many codes are possible
Answers: 1
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