IQ is normally distributed with a mean of 100 and a standard deviation of 15. Suppose one Individual ts randomly chosen. Let X IQ of an individual
(a) Find the 2-score for an IQ of 116, rounded to three decimal places.
(b) Find the probability that the person has an IQ greater than 116.
(C) Shade the area corresponding to this probability in the graph below. (Hint: The x-axis is the z.
score. Use your 2-score from part (a), rounded to one decimal place).
Shade: Left of a value
Click and drag the arrows to adjust the values.
4
3
-2
0
1
2.
3
4
1 -}
-1.5
(d) MENSA is an organization whose members have the top 2% of all IQs. Find the minimum IQ
needed to qualify for the MENSA organization.

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?

Polynomial that can be factored as (3x-4)(3x+4)

Which of the following describes the symmetry of the graph of y = x3?